CVE-2024-50150 (GCVE-0-2024-50150)

Vulnerability from cvelistv5 – Published: 2024-11-07 09:31 – Updated: 2026-08-05 11:42
VLAI
Title
usb: typec: altmode should keep reference to parent
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmode should keep reference to parent The altmode device release refers to its parent device, but without keeping a reference to it. When registering the altmode, get a reference to the parent and put it in the release function. Before this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues like this: [ 43.572860] kobject: 'port0.0' (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.573532] kobject: 'port0.1' (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000) [ 43.574407] kobject: 'port0' (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.575059] kobject: 'port1.0' (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.575908] kobject: 'port1.1' (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.576908] kobject: 'typec' (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.577769] kobject: 'port1' (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000) [ 46.612867] ================================================================== [ 46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129 [ 46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48 [ 46.614538] [ 46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535 [ 46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 [ 46.616042] Workqueue: events kobject_delayed_cleanup [ 46.616446] Call Trace: [ 46.616648] <TASK> [ 46.616820] dump_stack_lvl+0x5b/0x7c [ 46.617112] ? typec_altmode_release+0x38/0x129 [ 46.617470] print_report+0x14c/0x49e [ 46.617769] ? rcu_read_unlock_sched+0x56/0x69 [ 46.618117] ? __virt_addr_valid+0x19a/0x1ab [ 46.618456] ? kmem_cache_debug_flags+0xc/0x1d [ 46.618807] ? typec_altmode_release+0x38/0x129 [ 46.619161] kasan_report+0x8d/0xb4 [ 46.619447] ? typec_altmode_release+0x38/0x129 [ 46.619809] ? process_scheduled_works+0x3cb/0x85f [ 46.620185] typec_altmode_release+0x38/0x129 [ 46.620537] ? process_scheduled_works+0x3cb/0x85f [ 46.620907] device_release+0xaf/0xf2 [ 46.621206] kobject_delayed_cleanup+0x13b/0x17a [ 46.621584] process_scheduled_works+0x4f6/0x85f [ 46.621955] ? __pfx_process_scheduled_works+0x10/0x10 [ 46.622353] ? hlock_class+0x31/0x9a [ 46.622647] ? lock_acquired+0x361/0x3c3 [ 46.622956] ? move_linked_works+0x46/0x7d [ 46.623277] worker_thread+0x1ce/0x291 [ 46.623582] ? __kthread_parkme+0xc8/0xdf [ 46.623900] ? __pfx_worker_thread+0x10/0x10 [ 46.624236] kthread+0x17e/0x190 [ 46.624501] ? kthread+0xfb/0x190 [ 46.624756] ? __pfx_kthread+0x10/0x10 [ 46.625015] ret_from_fork+0x20/0x40 [ 46.625268] ? __pfx_kthread+0x10/0x10 [ 46.625532] ret_from_fork_asm+0x1a/0x30 [ 46.625805] </TASK> [ 46.625953] [ 46.626056] Allocated by task 678: [ 46.626287] kasan_save_stack+0x24/0x44 [ 46.626555] kasan_save_track+0x14/0x2d [ 46.626811] __kasan_kmalloc+0x3f/0x4d [ 46.627049] __kmalloc_noprof+0x1bf/0x1f0 [ 46.627362] typec_register_port+0x23/0x491 [ 46.627698] cros_typec_probe+0x634/0xbb6 [ 46.628026] platform_probe+0x47/0x8c [ 46.628311] really_probe+0x20a/0x47d [ 46.628605] device_driver_attach+0x39/0x72 [ 46.628940] bind_store+0x87/0xd7 [ 46.629213] kernfs_fop_write_iter+0x1aa/0x218 [ 46.629574] vfs_write+0x1d6/0x29b [ 46.629856] ksys_write+0xcd/0x13b [ 46.630128] do_syscall_64+0xd4/0x139 [ 46.630420] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 46.630820] [ 46.630946] Freed by task 48: [ 46.631182] kasan_save_stack+0x24/0x44 [ 46.631493] kasan_save_track+0x14/0x2d [ 46.631799] kasan_save_free_info+0x3f/0x4d [ 46.632144] __kasan_slab_free+0x37/0x45 [ 46.632474] ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 16:09 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 2b0b33e8a58388fa9078f0fbe9af1900e6b08879 (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 2c15c4133d00f5da632fce60ed013fc31aa9aa58 (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 6af43ec3bf40f8b428d9134ffa7a291aecd60da8 (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 87474406056891e4fdea0794e1f632b21b3dfa27 (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 1ded6b12499e6dee9b0e1ceac633be36538f6fc2 (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < 68a7c7fe322546be1464174c8d85874b8161deda (git)
Affected: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 , < befab3a278c59db0cc88c8799638064f6d3fd6f8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.229 , ≤ 5.10.* (semver)
Unaffected: 5.15.170 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmode should keep reference to parent\n\nThe altmode device release refers to its parent device, but without keeping\na reference to it.\n\nWhen registering the altmode, get a reference to the parent and put it in\nthe release function.\n\nBefore this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues\nlike this:\n\n[   43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000)\n[   43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   46.612867] ==================================================================\n[   46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129\n[   46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48\n[   46.614538]\n[   46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535\n[   46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n[   46.616042] Workqueue: events kobject_delayed_cleanup\n[   46.616446] Call Trace:\n[   46.616648]  \u003cTASK\u003e\n[   46.616820]  dump_stack_lvl+0x5b/0x7c\n[   46.617112]  ? typec_altmode_release+0x38/0x129\n[   46.617470]  print_report+0x14c/0x49e\n[   46.617769]  ? rcu_read_unlock_sched+0x56/0x69\n[   46.618117]  ? __virt_addr_valid+0x19a/0x1ab\n[   46.618456]  ? kmem_cache_debug_flags+0xc/0x1d\n[   46.618807]  ? typec_altmode_release+0x38/0x129\n[   46.619161]  kasan_report+0x8d/0xb4\n[   46.619447]  ? typec_altmode_release+0x38/0x129\n[   46.619809]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620185]  typec_altmode_release+0x38/0x129\n[   46.620537]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620907]  device_release+0xaf/0xf2\n[   46.621206]  kobject_delayed_cleanup+0x13b/0x17a\n[   46.621584]  process_scheduled_works+0x4f6/0x85f\n[   46.621955]  ? __pfx_process_scheduled_works+0x10/0x10\n[   46.622353]  ? hlock_class+0x31/0x9a\n[   46.622647]  ? lock_acquired+0x361/0x3c3\n[   46.622956]  ? move_linked_works+0x46/0x7d\n[   46.623277]  worker_thread+0x1ce/0x291\n[   46.623582]  ? __kthread_parkme+0xc8/0xdf\n[   46.623900]  ? __pfx_worker_thread+0x10/0x10\n[   46.624236]  kthread+0x17e/0x190\n[   46.624501]  ? kthread+0xfb/0x190\n[   46.624756]  ? __pfx_kthread+0x10/0x10\n[   46.625015]  ret_from_fork+0x20/0x40\n[   46.625268]  ? __pfx_kthread+0x10/0x10\n[   46.625532]  ret_from_fork_asm+0x1a/0x30\n[   46.625805]  \u003c/TASK\u003e\n[   46.625953]\n[   46.626056] Allocated by task 678:\n[   46.626287]  kasan_save_stack+0x24/0x44\n[   46.626555]  kasan_save_track+0x14/0x2d\n[   46.626811]  __kasan_kmalloc+0x3f/0x4d\n[   46.627049]  __kmalloc_noprof+0x1bf/0x1f0\n[   46.627362]  typec_register_port+0x23/0x491\n[   46.627698]  cros_typec_probe+0x634/0xbb6\n[   46.628026]  platform_probe+0x47/0x8c\n[   46.628311]  really_probe+0x20a/0x47d\n[   46.628605]  device_driver_attach+0x39/0x72\n[   46.628940]  bind_store+0x87/0xd7\n[   46.629213]  kernfs_fop_write_iter+0x1aa/0x218\n[   46.629574]  vfs_write+0x1d6/0x29b\n[   46.629856]  ksys_write+0xcd/0x13b\n[   46.630128]  do_syscall_64+0xd4/0x139\n[   46.630420]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[   46.630820]\n[   46.630946] Freed by task 48:\n[   46.631182]  kasan_save_stack+0x24/0x44\n[   46.631493]  kasan_save_track+0x14/0x2d\n[   46.631799]  kasan_save_free_info+0x3f/0x4d\n[   46.632144]  __kasan_slab_free+0x37/0x45\n[   46.632474]\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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            {
              "lang": "en",
              "value": "AV:L - The USB Type-C connector class registration/teardown path that reaches `typec_altmode_release()` is driven from local userspace \u2014 the commit\u0027s own KASAN trace shows the path entered via `ksys_write`/`vfs_write` \u2192 `kernfs_fop_write_iter` \u2192 `bind_store` \u2014 as well as by attaching/detaching a USB-C partner or cable. This matches how comparable USB Type-C class lifetime bugs are scored (e.g. CVE-2026-64463, also AV:L).\nAC:L - The attacker fully controls the trigger: driving the port/partner/plug register-unregister cycle (bind/unbind, module load/unload, or repeated USB-C attach/detach with alt-mode-advertising devices) deterministically produces the stale-parent dereference, as the reporter reproduced. No condition outside the attacker\u0027s control is required.\nPR:L - A basic local account suffices to interact with the Type-C class and drive the device lifecycle sequences that free the parent before the altmode release runs; no elevated capability is inherent to the vulnerable code itself. Choosing the higher of L/H per the uncertainty rule and consistent with prior USB/typec scoring in this series.\nUI:N - The attacker performs the triggering register/unregister cycle themselves; no action by any other user or victim is needed.\nS:U - The use-after-free occurs on kernel slab memory and its impact is confined to the kernel\u0027s own security authority \u2014 no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a slab use-after-free: `typec_altmode_release()` reads `dev-\u003eparent-\u003etype` and the embedded `mode_ids` from a freed `typec_port`/`typec_partner`/`typec_plug` object, and the freed slot can be groomed with attacker-controlled data, yielding an information-disclosure primitive.\nI:H - `altmode_id_remove()` performs `ida_free()` on an IDA located inside the freed object, writing through IDA/XArray pointers taken from reallocated attacker-controlled memory \u2014 a write primitive that can be leveraged for control-flow hijack.\nA:H - KASAN confirms a slab-use-after-free (`BUG: KASAN: slab-use-after-free in typec_altmode_release`) reached from a workqueue context; the corrupted IDA operation reliably leads to kernel oops or panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:42:03.878Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2b0b33e8a58388fa9078f0fbe9af1900e6b08879"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c15c4133d00f5da632fce60ed013fc31aa9aa58"
        },
        {
          "url": "https://git.kernel.org/stable/c/6af43ec3bf40f8b428d9134ffa7a291aecd60da8"
        },
        {
          "url": "https://git.kernel.org/stable/c/87474406056891e4fdea0794e1f632b21b3dfa27"
        },
        {
          "url": "https://git.kernel.org/stable/c/bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ded6b12499e6dee9b0e1ceac633be36538f6fc2"
        },
        {
          "url": "https://git.kernel.org/stable/c/68a7c7fe322546be1464174c8d85874b8161deda"
        },
        {
          "url": "https://git.kernel.org/stable/c/befab3a278c59db0cc88c8799638064f6d3fd6f8"
        }
      ],
      "title": "usb: typec: altmode should keep reference to parent",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50150",
    "datePublished": "2024-11-07T09:31:26.782Z",
    "dateReserved": "2024-10-21T19:36:19.959Z",
    "dateUpdated": "2026-08-05T11:42:03.878Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-50150",
      "date": "2026-09-21",
      "epss": "0.00244",
      "percentile": "0.15869"
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    "fkie_nvd": {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmode should keep reference to parent\n\nThe altmode device release refers to its parent device, but without keeping\na reference to it.\n\nWhen registering the altmode, get a reference to the parent and put it in\nthe release function.\n\nBefore this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues\nlike this:\n\n[   43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000)\n[   43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   46.612867] ==================================================================\n[   46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129\n[   46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48\n[   46.614538]\n[   46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535\n[   46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n[   46.616042] Workqueue: events kobject_delayed_cleanup\n[   46.616446] Call Trace:\n[   46.616648]  \u003cTASK\u003e\n[   46.616820]  dump_stack_lvl+0x5b/0x7c\n[   46.617112]  ? typec_altmode_release+0x38/0x129\n[   46.617470]  print_report+0x14c/0x49e\n[   46.617769]  ? rcu_read_unlock_sched+0x56/0x69\n[   46.618117]  ? __virt_addr_valid+0x19a/0x1ab\n[   46.618456]  ? kmem_cache_debug_flags+0xc/0x1d\n[   46.618807]  ? typec_altmode_release+0x38/0x129\n[   46.619161]  kasan_report+0x8d/0xb4\n[   46.619447]  ? typec_altmode_release+0x38/0x129\n[   46.619809]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620185]  typec_altmode_release+0x38/0x129\n[   46.620537]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620907]  device_release+0xaf/0xf2\n[   46.621206]  kobject_delayed_cleanup+0x13b/0x17a\n[   46.621584]  process_scheduled_works+0x4f6/0x85f\n[   46.621955]  ? __pfx_process_scheduled_works+0x10/0x10\n[   46.622353]  ? hlock_class+0x31/0x9a\n[   46.622647]  ? lock_acquired+0x361/0x3c3\n[   46.622956]  ? move_linked_works+0x46/0x7d\n[   46.623277]  worker_thread+0x1ce/0x291\n[   46.623582]  ? __kthread_parkme+0xc8/0xdf\n[   46.623900]  ? __pfx_worker_thread+0x10/0x10\n[   46.624236]  kthread+0x17e/0x190\n[   46.624501]  ? kthread+0xfb/0x190\n[   46.624756]  ? __pfx_kthread+0x10/0x10\n[   46.625015]  ret_from_fork+0x20/0x40\n[   46.625268]  ? __pfx_kthread+0x10/0x10\n[   46.625532]  ret_from_fork_asm+0x1a/0x30\n[   46.625805]  \u003c/TASK\u003e\n[   46.625953]\n[   46.626056] Allocated by task 678:\n[   46.626287]  kasan_save_stack+0x24/0x44\n[   46.626555]  kasan_save_track+0x14/0x2d\n[   46.626811]  __kasan_kmalloc+0x3f/0x4d\n[   46.627049]  __kmalloc_noprof+0x1bf/0x1f0\n[   46.627362]  typec_register_port+0x23/0x491\n[   46.627698]  cros_typec_probe+0x634/0xbb6\n[   46.628026]  platform_probe+0x47/0x8c\n[   46.628311]  really_probe+0x20a/0x47d\n[   46.628605]  device_driver_attach+0x39/0x72\n[   46.628940]  bind_store+0x87/0xd7\n[   46.629213]  kernfs_fop_write_iter+0x1aa/0x218\n[   46.629574]  vfs_write+0x1d6/0x29b\n[   46.629856]  ksys_write+0xcd/0x13b\n[   46.630128]  do_syscall_64+0xd4/0x139\n[   46.630420]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[   46.630820]\n[   46.630946] Freed by task 48:\n[   46.631182]  kasan_save_stack+0x24/0x44\n[   46.631493]  kasan_save_track+0x14/0x2d\n[   46.631799]  kasan_save_free_info+0x3f/0x4d\n[   46.632144]  __kasan_slab_free+0x37/0x45\n[   46.632474]\n---truncated---"
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: altmode deber\u00eda mantener la referencia al padre La versi\u00f3n del dispositivo altmode hace referencia a su dispositivo padre, pero sin mantener una referencia a \u00e9l. Al registrar el altmode, se obtiene una referencia al padre y se coloca en la funci\u00f3n de lanzamiento. Antes de esta correcci\u00f3n, al usar CONFIG_DEBUG_KOBJECT_RELEASE, vemos problemas como este: [ 43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 000000000000000 (delayed 3000) [ 43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 000000000000000 (delayed 1000) [ 43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, padre 0000000000000000 (retrasado 4000) [ 43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, padre 0000000000000000 (retrasado 4000) [ 43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, padre 000000000000000 (retrasado 4000) [ 43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, padre 0000000000000000 (retrasado 3000) [ 46.612867] ======================================================================= [ 46.613402] ERROR: KASAN: slab-use-after-free en typec_altmode_release+0x38/0x129 [ 46.614003] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff8880057b9118 por la tarea kworker/2:1/48 [ 46.614538] [ 46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 No contaminado 6.12.0-rc1-00138-gedbae730ad31 #535 [ 46.615391] Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 [ 46.616042] Cola de trabajo: eventos kobject_delayed_cleanup [ 46.616446] Seguimiento de llamadas: [ 46.616648]  [ 46.616820] dump_stack_lvl+0x5b/0x7c [ 46.617112] ? kmem_cache_debug_flags+0xc/0x1d [ 46.618807] ? typec_altmode_release+0x38/0x129 [ 46.619161] kasan_report+0x8d/0xb4 [ 46.619447] ? proceso_trabajo_programado+0x3cb/0x85f [ 46.620185] tipoc_modo_alt_release+0x38/0x129 [ 46.620537] ? proceso_trabajo_programado+0x3cb/0x85f [ 46.620907] dispositivo_release+0xaf/0xf2 [ 46.621206] limpieza_retrasada_de_objetos+0x13b/0x17a [ 46.621584] proceso_trabajo_programado+0x4f6/0x85f [ 46.621955] ? __pfx_process_scheduled_works+0x10/0x10 [ 46.622353] ? hlock_class+0x31/0x9a [ 46.622647] ? lock_acquired+0x361/0x3c3 [ 46.622956] ? move_linked_works+0x46/0x7d [ 46.623277] subproceso de trabajo+0x1ce/0x291 [ 46.623582] ? __kthread_parkme+0xc8/0xdf [ 46.623900] ? __pfx_worker_thread+0x10/0x10 [ 46.624236] kthread+0x17e/0x190 [ 46.624501] ? kthread+0xfb/0x190 [ 46.624756] ? __pfx_kthread+0x10/0x10 [ 46.625015] ret_from_fork+0x20/0x40 [ 46.625268] ? __pfx_kthread+0x10/0x10 [ 46.625532] ret_from_fork_asm+0x1a/0x30 [ 46.625805]  [ 46.625953] [ 46.626056] Asignado por la tarea 678: [ 46.626287] kasan_save_stack+0x24/0x44 [ 46.626555] kasan_save_track+0x14/0x2d [ 46.626811] __kasan_kmalloc+0x3f/0x4d [ 46.627049] __kmalloc_noprof+0x1bf/0x1f0 [ 46.627362] typec_register_port+0x23/0x491 [ 46.627698] cros_typec_probe+0x634/0xbb6 [ 46.628026] platform_probe+0x47/0x8c [ 46.628311] really_probe+0x20a/0x47d [ 46.628605] device_driver_attach+0x39/0x72 [ 46.628940] bind_store+0x87/0xd7 [ 46.629213] kernfs_fop_write_iter+0x1aa/0x218 [ 46.629574] vfs_write+0x1d6/0x29b [ 46.629856] ksys_write+0xcd/0x13b [ 46.630128] do_syscall_64+0xd4/0x139 [ 46.630420] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 46.630820] [ 46.630946] Liberado por la tarea 48: [ 46.631182] kasan_save_stack+0x24/0x44 [ 46.631493] kasan_save_track+0x14/0x2d [ 46.631799] kasan_save_free_info+0x3f/0x4d [ 46.632144] __kasan_slab_free+0x37/0x45 [ 46.632474] ---truncado---"
        }
      ],
      "id": "CVE-2024-50150",
      "lastModified": "2024-11-22T17:29:00.880",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 1.8,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2024-11-07T10:15:06.707",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/1ded6b12499e6dee9b0e1ceac633be36538f6fc2"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/2b0b33e8a58388fa9078f0fbe9af1900e6b08879"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/2c15c4133d00f5da632fce60ed013fc31aa9aa58"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/68a7c7fe322546be1464174c8d85874b8161deda"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/6af43ec3bf40f8b428d9134ffa7a291aecd60da8"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/87474406056891e4fdea0794e1f632b21b3dfa27"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/befab3a278c59db0cc88c8799638064f6d3fd6f8"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-416"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-19T01:16:12.000Z",
      "cve": "CVE-2024-50150",
      "id": "msrc_CVE-2024-50150",
      "initial_release_date": "2024-11-02T00:00:00.000Z",
      "product_status:fixed": "3",
      "product_status:known_affected": "3",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "usb: typec: altmode should keep reference to parent",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50150.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/typec/class.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "2b0b33e8a58388fa9078f0fbe9af1900e6b08879",
                    "status": "affected",
                    "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2c15c4133d00f5da632fce60ed013fc31aa9aa58",
                    "status": "affected",
                    "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6af43ec3bf40f8b428d9134ffa7a291aecd60da8",
                    "status": "affected",
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                  {
                    "lessThan": "1ded6b12499e6dee9b0e1ceac633be36538f6fc2",
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                  {
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                    "versionType": "git"
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                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/typec/class.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.19"
                  },
                  {
                    "lessThan": "4.19",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.323",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.285",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.229",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.170",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.115",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.59",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.11.*",
                    "status": "unaffected",
                    "version": "6.11.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.12",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          },
          {
            "affectedData": [
              {
                "defaultStatus": "unknown",
                "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
                "vendor": "Siemens",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                    "versionEndExcluding": "4.19.323",
                    "versionStartIncluding": "4.19",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
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                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
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            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmode should keep reference to parent\n\nThe altmode device release refers to its parent device, but without keeping\na reference to it.\n\nWhen registering the altmode, get a reference to the parent and put it in\nthe release function.\n\nBefore this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues\nlike this:\n\n[   43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000)\n[   43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   46.612867] ==================================================================\n[   46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129\n[   46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48\n[   46.614538]\n[   46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535\n[   46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n[   46.616042] Workqueue: events kobject_delayed_cleanup\n[   46.616446] Call Trace:\n[   46.616648]  \u003cTASK\u003e\n[   46.616820]  dump_stack_lvl+0x5b/0x7c\n[   46.617112]  ? typec_altmode_release+0x38/0x129\n[   46.617470]  print_report+0x14c/0x49e\n[   46.617769]  ? rcu_read_unlock_sched+0x56/0x69\n[   46.618117]  ? __virt_addr_valid+0x19a/0x1ab\n[   46.618456]  ? kmem_cache_debug_flags+0xc/0x1d\n[   46.618807]  ? typec_altmode_release+0x38/0x129\n[   46.619161]  kasan_report+0x8d/0xb4\n[   46.619447]  ? typec_altmode_release+0x38/0x129\n[   46.619809]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620185]  typec_altmode_release+0x38/0x129\n[   46.620537]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620907]  device_release+0xaf/0xf2\n[   46.621206]  kobject_delayed_cleanup+0x13b/0x17a\n[   46.621584]  process_scheduled_works+0x4f6/0x85f\n[   46.621955]  ? __pfx_process_scheduled_works+0x10/0x10\n[   46.622353]  ? hlock_class+0x31/0x9a\n[   46.622647]  ? lock_acquired+0x361/0x3c3\n[   46.622956]  ? move_linked_works+0x46/0x7d\n[   46.623277]  worker_thread+0x1ce/0x291\n[   46.623582]  ? __kthread_parkme+0xc8/0xdf\n[   46.623900]  ? __pfx_worker_thread+0x10/0x10\n[   46.624236]  kthread+0x17e/0x190\n[   46.624501]  ? kthread+0xfb/0x190\n[   46.624756]  ? __pfx_kthread+0x10/0x10\n[   46.625015]  ret_from_fork+0x20/0x40\n[   46.625268]  ? __pfx_kthread+0x10/0x10\n[   46.625532]  ret_from_fork_asm+0x1a/0x30\n[   46.625805]  \u003c/TASK\u003e\n[   46.625953]\n[   46.626056] Allocated by task 678:\n[   46.626287]  kasan_save_stack+0x24/0x44\n[   46.626555]  kasan_save_track+0x14/0x2d\n[   46.626811]  __kasan_kmalloc+0x3f/0x4d\n[   46.627049]  __kmalloc_noprof+0x1bf/0x1f0\n[   46.627362]  typec_register_port+0x23/0x491\n[   46.627698]  cros_typec_probe+0x634/0xbb6\n[   46.628026]  platform_probe+0x47/0x8c\n[   46.628311]  really_probe+0x20a/0x47d\n[   46.628605]  device_driver_attach+0x39/0x72\n[   46.628940]  bind_store+0x87/0xd7\n[   46.629213]  kernfs_fop_write_iter+0x1aa/0x218\n[   46.629574]  vfs_write+0x1d6/0x29b\n[   46.629856]  ksys_write+0xcd/0x13b\n[   46.630128]  do_syscall_64+0xd4/0x139\n[   46.630420]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[   46.630820]\n[   46.630946] Freed by task 48:\n[   46.631182]  kasan_save_stack+0x24/0x44\n[   46.631493]  kasan_save_track+0x14/0x2d\n[   46.631799]  kasan_save_free_info+0x3f/0x4d\n[   46.632144]  __kasan_slab_free+0x37/0x45\n[   46.632474]\n---truncated---"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: altmode deber\u00eda mantener la referencia al padre La versi\u00f3n del dispositivo altmode hace referencia a su dispositivo padre, pero sin mantener una referencia a \u00e9l. Al registrar el altmode, se obtiene una referencia al padre y se coloca en la funci\u00f3n de lanzamiento. Antes de esta correcci\u00f3n, al usar CONFIG_DEBUG_KOBJECT_RELEASE, vemos problemas como este: [ 43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 000000000000000 (delayed 3000) [ 43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 000000000000000 (delayed 1000) [ 43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, padre 0000000000000000 (retrasado 4000) [ 43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, padre 0000000000000000 (retrasado 4000) [ 43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, padre 000000000000000 (retrasado 4000) [ 43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, padre 0000000000000000 (retrasado 3000) [ 46.612867] ======================================================================= [ 46.613402] ERROR: KASAN: slab-use-after-free en typec_altmode_release+0x38/0x129 [ 46.614003] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff8880057b9118 por la tarea kworker/2:1/48 [ 46.614538] [ 46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 No contaminado 6.12.0-rc1-00138-gedbae730ad31 #535 [ 46.615391] Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 [ 46.616042] Cola de trabajo: eventos kobject_delayed_cleanup [ 46.616446] Seguimiento de llamadas: [ 46.616648]  [ 46.616820] dump_stack_lvl+0x5b/0x7c [ 46.617112] ? kmem_cache_debug_flags+0xc/0x1d [ 46.618807] ? typec_altmode_release+0x38/0x129 [ 46.619161] kasan_report+0x8d/0xb4 [ 46.619447] ? proceso_trabajo_programado+0x3cb/0x85f [ 46.620185] tipoc_modo_alt_release+0x38/0x129 [ 46.620537] ? proceso_trabajo_programado+0x3cb/0x85f [ 46.620907] dispositivo_release+0xaf/0xf2 [ 46.621206] limpieza_retrasada_de_objetos+0x13b/0x17a [ 46.621584] proceso_trabajo_programado+0x4f6/0x85f [ 46.621955] ? __pfx_process_scheduled_works+0x10/0x10 [ 46.622353] ? hlock_class+0x31/0x9a [ 46.622647] ? lock_acquired+0x361/0x3c3 [ 46.622956] ? move_linked_works+0x46/0x7d [ 46.623277] subproceso de trabajo+0x1ce/0x291 [ 46.623582] ? __kthread_parkme+0xc8/0xdf [ 46.623900] ? __pfx_worker_thread+0x10/0x10 [ 46.624236] kthread+0x17e/0x190 [ 46.624501] ? kthread+0xfb/0x190 [ 46.624756] ? __pfx_kthread+0x10/0x10 [ 46.625015] ret_from_fork+0x20/0x40 [ 46.625268] ? __pfx_kthread+0x10/0x10 [ 46.625532] ret_from_fork_asm+0x1a/0x30 [ 46.625805]  [ 46.625953] [ 46.626056] Asignado por la tarea 678: [ 46.626287] kasan_save_stack+0x24/0x44 [ 46.626555] kasan_save_track+0x14/0x2d [ 46.626811] __kasan_kmalloc+0x3f/0x4d [ 46.627049] __kmalloc_noprof+0x1bf/0x1f0 [ 46.627362] typec_register_port+0x23/0x491 [ 46.627698] cros_typec_probe+0x634/0xbb6 [ 46.628026] platform_probe+0x47/0x8c [ 46.628311] really_probe+0x20a/0x47d [ 46.628605] device_driver_attach+0x39/0x72 [ 46.628940] bind_store+0x87/0xd7 [ 46.629213] kernfs_fop_write_iter+0x1aa/0x218 [ 46.629574] vfs_write+0x1d6/0x29b [ 46.629856] ksys_write+0xcd/0x13b [ 46.630128] do_syscall_64+0xd4/0x139 [ 46.630420] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 46.630820] [ 46.630946] Liberado por la tarea 48: [ 46.631182] kasan_save_stack+0x24/0x44 [ 46.631493] kasan_save_track+0x14/0x2d [ 46.631799] kasan_save_free_info+0x3f/0x4d [ 46.632144] __kasan_slab_free+0x37/0x45 [ 46.632474] ---truncado---"
          }
        ],
        "id": "CVE-2024-50150",
        "lastModified": "2026-06-17T08:03:43.187",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-50150",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-06T16:09:31.243434Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-11-07T10:15:06.707",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1ded6b12499e6dee9b0e1ceac633be36538f6fc2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b0b33e8a58388fa9078f0fbe9af1900e6b08879"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2c15c4133d00f5da632fce60ed013fc31aa9aa58"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/68a7c7fe322546be1464174c8d85874b8161deda"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6af43ec3bf40f8b428d9134ffa7a291aecd60da8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/87474406056891e4fdea0794e1f632b21b3dfa27"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/befab3a278c59db0cc88c8799638064f6d3fd6f8"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
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                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
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        ]
      }
    },
    "redhat_vex": {
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      "current_release_date": "2026-09-14T11:55:52+00:00",
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      "id": "CVE-2024-50150",
      "initial_release_date": "2024-11-07T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: typec: altmode should keep reference to parent",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50150.json",
      "version": "3"
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      "current_release_date": "2026-09-19T02:15:37Z",
      "cve": "CVE-2024-50150",
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      "initial_release_date": "2024-11-08T03:49:04Z",
      "product_status:known_affected": "581",
      "product_status:known_not_affected": "145",
      "product_status:recommended": "624",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50150",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50150.json",
      "version": "64"
    },
    "vulnrichment": {
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              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            },
            "references": [
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                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
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              {
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            ],
            "title": "CVE Program Container"
          },
          {
            "affected": [
              {
                "defaultStatus": "unknown",
                "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
                "vendor": "Siemens",
                "versions": [
                  {
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                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
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                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-12T12:00:22.592Z",
              "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
              "shortName": "siemens-SADP"
            },
            "references": [
              {
                "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
              }
            ],
            "x_adpType": "supplier"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.8,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-50150",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-03-06T16:09:31.243434Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
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            "providerMetadata": {
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              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
          "affected": [
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              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
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                  "versionType": "git"
                },
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                  "status": "affected",
                  "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7",
                  "versionType": "git"
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              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/usb/typec/class.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.19"
                },
                {
                  "lessThan": "4.19",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.19.*",
                  "status": "unaffected",
                  "version": "4.19.323",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.285",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.229",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.170",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.115",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.59",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.6",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.323",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.285",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.229",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.170",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.115",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.59",
                      "versionStartIncluding": "4.19",
                      "vulnerable": true
                    },
                    {
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                      "versionEndExcluding": "6.11.6",
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                      "vulnerable": true
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                    {
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                      "versionEndExcluding": "6.12",
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                  "negate": false,
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmode should keep reference to parent\n\nThe altmode device release refers to its parent device, but without keeping\na reference to it.\n\nWhen registering the altmode, get a reference to the parent and put it in\nthe release function.\n\nBefore this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues\nlike this:\n\n[   43.572860] kobject: \u0027port0.0\u0027 (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.573532] kobject: \u0027port0.1\u0027 (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000)\n[   43.574407] kobject: \u0027port0\u0027 (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   43.575059] kobject: \u0027port1.0\u0027 (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.575908] kobject: \u0027port1.1\u0027 (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.576908] kobject: \u0027typec\u0027 (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000)\n[   43.577769] kobject: \u0027port1\u0027 (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000)\n[   46.612867] ==================================================================\n[   46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129\n[   46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48\n[   46.614538]\n[   46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535\n[   46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n[   46.616042] Workqueue: events kobject_delayed_cleanup\n[   46.616446] Call Trace:\n[   46.616648]  \u003cTASK\u003e\n[   46.616820]  dump_stack_lvl+0x5b/0x7c\n[   46.617112]  ? typec_altmode_release+0x38/0x129\n[   46.617470]  print_report+0x14c/0x49e\n[   46.617769]  ? rcu_read_unlock_sched+0x56/0x69\n[   46.618117]  ? __virt_addr_valid+0x19a/0x1ab\n[   46.618456]  ? kmem_cache_debug_flags+0xc/0x1d\n[   46.618807]  ? typec_altmode_release+0x38/0x129\n[   46.619161]  kasan_report+0x8d/0xb4\n[   46.619447]  ? typec_altmode_release+0x38/0x129\n[   46.619809]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620185]  typec_altmode_release+0x38/0x129\n[   46.620537]  ? process_scheduled_works+0x3cb/0x85f\n[   46.620907]  device_release+0xaf/0xf2\n[   46.621206]  kobject_delayed_cleanup+0x13b/0x17a\n[   46.621584]  process_scheduled_works+0x4f6/0x85f\n[   46.621955]  ? __pfx_process_scheduled_works+0x10/0x10\n[   46.622353]  ? hlock_class+0x31/0x9a\n[   46.622647]  ? lock_acquired+0x361/0x3c3\n[   46.622956]  ? move_linked_works+0x46/0x7d\n[   46.623277]  worker_thread+0x1ce/0x291\n[   46.623582]  ? __kthread_parkme+0xc8/0xdf\n[   46.623900]  ? __pfx_worker_thread+0x10/0x10\n[   46.624236]  kthread+0x17e/0x190\n[   46.624501]  ? kthread+0xfb/0x190\n[   46.624756]  ? __pfx_kthread+0x10/0x10\n[   46.625015]  ret_from_fork+0x20/0x40\n[   46.625268]  ? __pfx_kthread+0x10/0x10\n[   46.625532]  ret_from_fork_asm+0x1a/0x30\n[   46.625805]  \u003c/TASK\u003e\n[   46.625953]\n[   46.626056] Allocated by task 678:\n[   46.626287]  kasan_save_stack+0x24/0x44\n[   46.626555]  kasan_save_track+0x14/0x2d\n[   46.626811]  __kasan_kmalloc+0x3f/0x4d\n[   46.627049]  __kmalloc_noprof+0x1bf/0x1f0\n[   46.627362]  typec_register_port+0x23/0x491\n[   46.627698]  cros_typec_probe+0x634/0xbb6\n[   46.628026]  platform_probe+0x47/0x8c\n[   46.628311]  really_probe+0x20a/0x47d\n[   46.628605]  device_driver_attach+0x39/0x72\n[   46.628940]  bind_store+0x87/0xd7\n[   46.629213]  kernfs_fop_write_iter+0x1aa/0x218\n[   46.629574]  vfs_write+0x1d6/0x29b\n[   46.629856]  ksys_write+0xcd/0x13b\n[   46.630128]  do_syscall_64+0xd4/0x139\n[   46.630420]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[   46.630820]\n[   46.630946] Freed by task 48:\n[   46.631182]  kasan_save_stack+0x24/0x44\n[   46.631493]  kasan_save_track+0x14/0x2d\n[   46.631799]  kasan_save_free_info+0x3f/0x4d\n[   46.632144]  __kasan_slab_free+0x37/0x45\n[   46.632474]\n---truncated---"
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The USB Type-C connector class registration/teardown path that reaches `typec_altmode_release()` is driven from local userspace \u2014 the commit\u0027s own KASAN trace shows the path entered via `ksys_write`/`vfs_write` \u2192 `kernfs_fop_write_iter` \u2192 `bind_store` \u2014 as well as by attaching/detaching a USB-C partner or cable. This matches how comparable USB Type-C class lifetime bugs are scored (e.g. CVE-2026-64463, also AV:L).\nAC:L - The attacker fully controls the trigger: driving the port/partner/plug register-unregister cycle (bind/unbind, module load/unload, or repeated USB-C attach/detach with alt-mode-advertising devices) deterministically produces the stale-parent dereference, as the reporter reproduced. No condition outside the attacker\u0027s control is required.\nPR:L - A basic local account suffices to interact with the Type-C class and drive the device lifecycle sequences that free the parent before the altmode release runs; no elevated capability is inherent to the vulnerable code itself. Choosing the higher of L/H per the uncertainty rule and consistent with prior USB/typec scoring in this series.\nUI:N - The attacker performs the triggering register/unregister cycle themselves; no action by any other user or victim is needed.\nS:U - The use-after-free occurs on kernel slab memory and its impact is confined to the kernel\u0027s own security authority \u2014 no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a slab use-after-free: `typec_altmode_release()` reads `dev-\u003eparent-\u003etype` and the embedded `mode_ids` from a freed `typec_port`/`typec_partner`/`typec_plug` object, and the freed slot can be groomed with attacker-controlled data, yielding an information-disclosure primitive.\nI:H - `altmode_id_remove()` performs `ida_free()` on an IDA located inside the freed object, writing through IDA/XArray pointers taken from reallocated attacker-controlled memory \u2014 a write primitive that can be leveraged for control-flow hijack.\nA:H - KASAN confirms a slab-use-after-free (`BUG: KASAN: slab-use-after-free in typec_altmode_release`) reached from a workqueue context; the corrupted IDA operation reliably leads to kernel oops or panic."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:42:03.878Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/2b0b33e8a58388fa9078f0fbe9af1900e6b08879"
            },
            {
              "url": "https://git.kernel.org/stable/c/2c15c4133d00f5da632fce60ed013fc31aa9aa58"
            },
            {
              "url": "https://git.kernel.org/stable/c/6af43ec3bf40f8b428d9134ffa7a291aecd60da8"
            },
            {
              "url": "https://git.kernel.org/stable/c/87474406056891e4fdea0794e1f632b21b3dfa27"
            },
            {
              "url": "https://git.kernel.org/stable/c/bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d"
            },
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            },
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              "url": "https://git.kernel.org/stable/c/68a7c7fe322546be1464174c8d85874b8161deda"
            },
            {
              "url": "https://git.kernel.org/stable/c/befab3a278c59db0cc88c8799638064f6d3fd6f8"
            }
          ],
          "title": "usb: typec: altmode should keep reference to parent",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50150",
        "datePublished": "2024-11-07T09:31:26.782Z",
        "dateReserved": "2024-10-21T19:36:19.959Z",
        "dateUpdated": "2026-08-05T11:42:03.878Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.