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CVE-2025-22020 (GCVE-0-2025-22020)

Vulnerability from cvelistv5 – Published: 2025-04-16 10:20 – Updated: 2026-08-05 11:56
VLAI
Title
memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove
Summary
In the Linux kernel, the following vulnerability has been resolved: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove This fixes the following crash: ================================================================== BUG: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] Read of size 8 at addr ffff888136335380 by task kworker/6:0/140241 CPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G E 6.14.0-rc6+ #1 Tainted: [E]=UNSIGNED_MODULE Hardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024 Workqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms] Call Trace: <TASK> dump_stack_lvl+0x51/0x70 print_address_description.constprop.0+0x27/0x320 ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] print_report+0x3e/0x70 kasan_report+0xab/0xe0 ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms] ? __pfx___schedule+0x10/0x10 ? kick_pool+0x3b/0x270 process_one_work+0x357/0x660 worker_thread+0x390/0x4c0 ? __pfx_worker_thread+0x10/0x10 kthread+0x190/0x1d0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> Allocated by task 161446: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 __kasan_kmalloc+0x7b/0x90 __kmalloc_noprof+0x1a7/0x470 memstick_alloc_host+0x1f/0xe0 [memstick] rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms] platform_probe+0x60/0xe0 call_driver_probe+0x35/0x120 really_probe+0x123/0x410 __driver_probe_device+0xc7/0x1e0 driver_probe_device+0x49/0xf0 __device_attach_driver+0xc6/0x160 bus_for_each_drv+0xe4/0x160 __device_attach+0x13a/0x2b0 bus_probe_device+0xbd/0xd0 device_add+0x4a5/0x760 platform_device_add+0x189/0x370 mfd_add_device+0x587/0x5e0 mfd_add_devices+0xb1/0x130 rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb] usb_probe_interface+0x15c/0x460 call_driver_probe+0x35/0x120 really_probe+0x123/0x410 __driver_probe_device+0xc7/0x1e0 driver_probe_device+0x49/0xf0 __device_attach_driver+0xc6/0x160 bus_for_each_drv+0xe4/0x160 __device_attach+0x13a/0x2b0 rebind_marked_interfaces.isra.0+0xcc/0x110 usb_reset_device+0x352/0x410 usbdev_do_ioctl+0xe5c/0x1860 usbdev_ioctl+0xa/0x20 __x64_sys_ioctl+0xc5/0xf0 do_syscall_64+0x59/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Freed by task 161506: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 kasan_save_free_info+0x36/0x60 __kasan_slab_free+0x34/0x50 kfree+0x1fd/0x3b0 device_release+0x56/0xf0 kobject_cleanup+0x73/0x1c0 rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms] platform_remove+0x2f/0x50 device_release_driver_internal+0x24b/0x2e0 bus_remove_device+0x124/0x1d0 device_del+0x239/0x530 platform_device_del.part.0+0x19/0xe0 platform_device_unregister+0x1c/0x40 mfd_remove_devices_fn+0x167/0x170 device_for_each_child_reverse+0xc9/0x130 mfd_remove_devices+0x6e/0xa0 rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb] usb_unbind_interface+0xf3/0x3f0 device_release_driver_internal+0x24b/0x2e0 proc_disconnect_claim+0x13d/0x220 usbdev_do_ioctl+0xb5e/0x1860 usbdev_ioctl+0xa/0x20 __x64_sys_ioctl+0xc5/0xf0 do_syscall_64+0x59/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Last potentially related work creation: kasan_save_stack+0x20/0x40 kasan_record_aux_stack+0x85/0x90 insert_work+0x29/0x100 __queue_work+0x34a/0x540 call_timer_fn+0x2a/0x160 expire_timers+0x5f/0x1f0 __run_timer_base.part.0+0x1b6/0x1e0 run_timer_softirq+0x8b/0xe0 handle_softirqs+0xf9/0x360 __irq_exit_rcu+0x114/0x130 sysvec_apic_timer_interrupt+0x72/0x90 asm_sysvec_apic_timer_interrupt+0x16/0x20 Second to last potentially related work creation: kasan_save_stack+0x20/0x40 kasan_record_aux_stack+0x85/0x90 insert_work+0x29/0x100 __queue_work+0x34a/0x540 call_timer_fn+0x2a/0x160 expire_timers+0x5f/0x1f0 __run_timer_base.part.0+0x1b6/0x1e0 run_timer_softirq+0x8b/0xe0 handle_softirqs+0xf9/0x ---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 2025-10-01 17:06 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 914c5e5bfceb9878f3056eaf4d1c88f2cbe0a185 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 9dfaf4d723c62bda8d9d1340e2e78acf0c190439 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 31f0eaed6914333f42501fc7e0f6830879f5ef2d (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 52d942a5302eefb3b7a3bfee310a5a33feeedc21 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 6186fb2cd36317277a8423687982140a7f3f7841 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < b094e8e3988e02e8cef7a756c8d2cea9c12509ab (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 0067cb7d7e7c277e91a0887a3c24e71462379469 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 75123adf204f997e11bbddee48408c284f51c050 (git)
Affected: 6827ca573c03385439fdfc8b512d556dc7c54fc9 , < 4676741a3464b300b486e70585c3c9b692be1632 (git)
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Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.292 , ≤ 5.4.* (semver)
Unaffected: 5.10.236 , ≤ 5.10.* (semver)
Unaffected: 5.15.180 , ≤ 5.15.* (semver)
Unaffected: 6.1.133 , ≤ 6.1.* (semver)
Unaffected: 6.6.86 , ≤ 6.6.* (semver)
Unaffected: 6.12.22 , ≤ 6.12.* (semver)
Unaffected: 6.13.10 , ≤ 6.13.* (semver)
Unaffected: 6.14.1 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove\n\nThis fixes the following crash:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\nRead of size 8 at addr ffff888136335380 by task kworker/6:0/140241\n\nCPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G            E      6.14.0-rc6+ #1\nTainted: [E]=UNSIGNED_MODULE\nHardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024\nWorkqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x51/0x70\n print_address_description.constprop.0+0x27/0x320\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n print_report+0x3e/0x70\n kasan_report+0xab/0xe0\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\n ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms]\n ? __pfx___schedule+0x10/0x10\n ? kick_pool+0x3b/0x270\n process_one_work+0x357/0x660\n worker_thread+0x390/0x4c0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x190/0x1d0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nAllocated by task 161446:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0x7b/0x90\n __kmalloc_noprof+0x1a7/0x470\n memstick_alloc_host+0x1f/0xe0 [memstick]\n rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms]\n platform_probe+0x60/0xe0\n call_driver_probe+0x35/0x120\n really_probe+0x123/0x410\n __driver_probe_device+0xc7/0x1e0\n driver_probe_device+0x49/0xf0\n __device_attach_driver+0xc6/0x160\n bus_for_each_drv+0xe4/0x160\n __device_attach+0x13a/0x2b0\n bus_probe_device+0xbd/0xd0\n device_add+0x4a5/0x760\n platform_device_add+0x189/0x370\n mfd_add_device+0x587/0x5e0\n mfd_add_devices+0xb1/0x130\n rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb]\n usb_probe_interface+0x15c/0x460\n call_driver_probe+0x35/0x120\n really_probe+0x123/0x410\n __driver_probe_device+0xc7/0x1e0\n driver_probe_device+0x49/0xf0\n __device_attach_driver+0xc6/0x160\n bus_for_each_drv+0xe4/0x160\n __device_attach+0x13a/0x2b0\n rebind_marked_interfaces.isra.0+0xcc/0x110\n usb_reset_device+0x352/0x410\n usbdev_do_ioctl+0xe5c/0x1860\n usbdev_ioctl+0xa/0x20\n __x64_sys_ioctl+0xc5/0xf0\n do_syscall_64+0x59/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFreed by task 161506:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x36/0x60\n __kasan_slab_free+0x34/0x50\n kfree+0x1fd/0x3b0\n device_release+0x56/0xf0\n kobject_cleanup+0x73/0x1c0\n rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms]\n platform_remove+0x2f/0x50\n device_release_driver_internal+0x24b/0x2e0\n bus_remove_device+0x124/0x1d0\n device_del+0x239/0x530\n platform_device_del.part.0+0x19/0xe0\n platform_device_unregister+0x1c/0x40\n mfd_remove_devices_fn+0x167/0x170\n device_for_each_child_reverse+0xc9/0x130\n mfd_remove_devices+0x6e/0xa0\n rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb]\n usb_unbind_interface+0xf3/0x3f0\n device_release_driver_internal+0x24b/0x2e0\n proc_disconnect_claim+0x13d/0x220\n usbdev_do_ioctl+0xb5e/0x1860\n usbdev_ioctl+0xa/0x20\n __x64_sys_ioctl+0xc5/0xf0\n do_syscall_64+0x59/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nLast potentially related work creation:\n kasan_save_stack+0x20/0x40\n kasan_record_aux_stack+0x85/0x90\n insert_work+0x29/0x100\n __queue_work+0x34a/0x540\n call_timer_fn+0x2a/0x160\n expire_timers+0x5f/0x1f0\n __run_timer_base.part.0+0x1b6/0x1e0\n run_timer_softirq+0x8b/0xe0\n handle_softirqs+0xf9/0x360\n __irq_exit_rcu+0x114/0x130\n sysvec_apic_timer_interrupt+0x72/0x90\n asm_sysvec_apic_timer_interrupt+0x16/0x20\n\nSecond to last potentially related work creation:\n kasan_save_stack+0x20/0x40\n kasan_record_aux_stack+0x85/0x90\n insert_work+0x29/0x100\n __queue_work+0x34a/0x540\n call_timer_fn+0x2a/0x160\n expire_timers+0x5f/0x1f0\n __run_timer_base.part.0+0x1b6/0x1e0\n run_timer_softirq+0x8b/0xe0\n handle_softirqs+0xf9/0x\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 reporter\u0027s own KASAN trace shows the free being driven entirely from userspace via usbfs ioctls (`USBDEVFS_DISCONNECT_CLAIM` and `USBDEVFS_RESET` through `usbdev_do_ioctl`), requiring no physical manipulation of the reader, only local access to `/dev/bus/usb/...`.\nAC:L - The attacker controls both sides: the poll_card delayed work is perpetually re-armed every 100 jiffies while a MemStick card is powered, so an unbind issued at any moment reliably lands with a pending timer into the freed object, and the disconnect ioctl can be repeated in a loop until the heap is groomed as desired.\nPR:L - Only an ordinary local account with usbfs access (granted to the active seat user by uaccess/plugdev udev rules on common desktop distributions) is needed; the disconnect-claim and device-reset ioctl paths perform no capability check.\nUI:N - The attacker performs the unbind/reset ioctls itself and no action by another user is required; presence of the Realtek USB card reader is a property of the affected configuration, not victim interaction.\nS:U - The use-after-free is confined to kernel slab memory within the same security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The freed 2048-byte object is re-read by the poll worker and, after slab reclaim, the dangling `ucr`/`pdev`/`msh` pointers loaded from it can be steered to dereference attacker-chosen kernel addresses, yielding an arbitrary-read primitive well beyond the initial 8-byte KASAN-reported leak.\nI:H - The `timer_list` and `work_struct` embedded in the freed region give a direct function-pointer hijack via `call_timer_fn()`, and `mutex_lock(\u0026ucr-\u003edev_mutex)` on a sprayed pointer provides a write primitive, so the UAF is exploitable for control-flow hijack and privilege escalation.\nA:H - The unfixed path reliably produces a slab-use-after-free that KASAN reports and that causes kernel oops/panic in ordinary (non-KASAN) kernels, and the trigger can be repeated at will by an unprivileged local user."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:56:02.551Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/914c5e5bfceb9878f3056eaf4d1c88f2cbe0a185"
        },
        {
          "url": "https://git.kernel.org/stable/c/9dfaf4d723c62bda8d9d1340e2e78acf0c190439"
        },
        {
          "url": "https://git.kernel.org/stable/c/31f0eaed6914333f42501fc7e0f6830879f5ef2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/52d942a5302eefb3b7a3bfee310a5a33feeedc21"
        },
        {
          "url": "https://git.kernel.org/stable/c/6186fb2cd36317277a8423687982140a7f3f7841"
        },
        {
          "url": "https://git.kernel.org/stable/c/b094e8e3988e02e8cef7a756c8d2cea9c12509ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/0067cb7d7e7c277e91a0887a3c24e71462379469"
        },
        {
          "url": "https://git.kernel.org/stable/c/75123adf204f997e11bbddee48408c284f51c050"
        },
        {
          "url": "https://git.kernel.org/stable/c/4676741a3464b300b486e70585c3c9b692be1632"
        }
      ],
      "title": "memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22020",
    "datePublished": "2025-04-16T10:20:37.045Z",
    "dateReserved": "2024-12-29T08:45:45.807Z",
    "dateUpdated": "2026-08-05T11:56:02.551Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-22020",
      "date": "2026-09-16",
      "epss": "0.00216",
      "percentile": "0.12183"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22020\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T11:15:42.640\",\"lastModified\":\"2026-06-17T08:44:51.623\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmemstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove\\n\\nThis fixes the following crash:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\nRead of size 8 at addr ffff888136335380 by task kworker/6:0/140241\\n\\nCPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G            E      6.14.0-rc6+ #1\\nTainted: [E]=UNSIGNED_MODULE\\nHardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024\\nWorkqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms]\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x51/0x70\\n print_address_description.constprop.0+0x27/0x320\\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n print_report+0x3e/0x70\\n kasan_report+0xab/0xe0\\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms]\\n ? __pfx___schedule+0x10/0x10\\n ? kick_pool+0x3b/0x270\\n process_one_work+0x357/0x660\\n worker_thread+0x390/0x4c0\\n ? __pfx_worker_thread+0x10/0x10\\n kthread+0x190/0x1d0\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork+0x2d/0x50\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork_asm+0x1a/0x30\\n \u003c/TASK\u003e\\n\\nAllocated by task 161446:\\n kasan_save_stack+0x20/0x40\\n kasan_save_track+0x10/0x30\\n __kasan_kmalloc+0x7b/0x90\\n __kmalloc_noprof+0x1a7/0x470\\n memstick_alloc_host+0x1f/0xe0 [memstick]\\n rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms]\\n platform_probe+0x60/0xe0\\n call_driver_probe+0x35/0x120\\n really_probe+0x123/0x410\\n __driver_probe_device+0xc7/0x1e0\\n driver_probe_device+0x49/0xf0\\n __device_attach_driver+0xc6/0x160\\n bus_for_each_drv+0xe4/0x160\\n __device_attach+0x13a/0x2b0\\n bus_probe_device+0xbd/0xd0\\n device_add+0x4a5/0x760\\n platform_device_add+0x189/0x370\\n mfd_add_device+0x587/0x5e0\\n mfd_add_devices+0xb1/0x130\\n rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb]\\n usb_probe_interface+0x15c/0x460\\n call_driver_probe+0x35/0x120\\n really_probe+0x123/0x410\\n __driver_probe_device+0xc7/0x1e0\\n driver_probe_device+0x49/0xf0\\n __device_attach_driver+0xc6/0x160\\n bus_for_each_drv+0xe4/0x160\\n __device_attach+0x13a/0x2b0\\n rebind_marked_interfaces.isra.0+0xcc/0x110\\n usb_reset_device+0x352/0x410\\n usbdev_do_ioctl+0xe5c/0x1860\\n usbdev_ioctl+0xa/0x20\\n __x64_sys_ioctl+0xc5/0xf0\\n do_syscall_64+0x59/0x170\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nFreed by task 161506:\\n kasan_save_stack+0x20/0x40\\n kasan_save_track+0x10/0x30\\n kasan_save_free_info+0x36/0x60\\n __kasan_slab_free+0x34/0x50\\n kfree+0x1fd/0x3b0\\n device_release+0x56/0xf0\\n kobject_cleanup+0x73/0x1c0\\n rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms]\\n platform_remove+0x2f/0x50\\n device_release_driver_internal+0x24b/0x2e0\\n bus_remove_device+0x124/0x1d0\\n device_del+0x239/0x530\\n platform_device_del.part.0+0x19/0xe0\\n platform_device_unregister+0x1c/0x40\\n mfd_remove_devices_fn+0x167/0x170\\n device_for_each_child_reverse+0xc9/0x130\\n mfd_remove_devices+0x6e/0xa0\\n rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb]\\n usb_unbind_interface+0xf3/0x3f0\\n device_release_driver_internal+0x24b/0x2e0\\n proc_disconnect_claim+0x13d/0x220\\n usbdev_do_ioctl+0xb5e/0x1860\\n usbdev_ioctl+0xa/0x20\\n __x64_sys_ioctl+0xc5/0xf0\\n do_syscall_64+0x59/0x170\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nLast potentially related work creation:\\n kasan_save_stack+0x20/0x40\\n kasan_record_aux_stack+0x85/0x90\\n insert_work+0x29/0x100\\n __queue_work+0x34a/0x540\\n call_timer_fn+0x2a/0x160\\n expire_timers+0x5f/0x1f0\\n __run_timer_base.part.0+0x1b6/0x1e0\\n run_timer_softirq+0x8b/0xe0\\n handle_softirqs+0xf9/0x360\\n __irq_exit_rcu+0x114/0x130\\n sysvec_apic_timer_interrupt+0x72/0x90\\n asm_sysvec_apic_timer_interrupt+0x16/0x20\\n\\nSecond to last potentially related work creation:\\n kasan_save_stack+0x20/0x40\\n kasan_record_aux_stack+0x85/0x90\\n insert_work+0x29/0x100\\n __queue_work+0x34a/0x540\\n call_timer_fn+0x2a/0x160\\n expire_timers+0x5f/0x1f0\\n __run_timer_base.part.0+0x1b6/0x1e0\\n run_timer_softirq+0x8b/0xe0\\n handle_softirqs+0xf9/0x\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: memstick: rtsx_usb_ms: Correcci\u00f3n de slab-use-after-free en rtsx_usb_ms_drv_remove Esto corrige el siguiente fallo: ====================================================================== ERROR: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] Read of size 8 at addr ffff888136335380 by task kworker/6:0/140241 CPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G E 6.14.0-rc6+ #1 Tainted: [E]=UNSIGNED_MODULE Hardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024 Workqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms] Call Trace:  dump_stack_lvl+0x51/0x70 print_address_description.constprop.0+0x27/0x320 ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] print_report+0x3e/0x70 kasan_report+0xab/0xe0 ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms] ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms] ? __pfx___schedule+0x10/0x10 ? kick_pool+0x3b/0x270 process_one_work+0x357/0x660 worker_thread+0x390/0x4c0 ? __pfx_worker_thread+0x10/0x10 kthread+0x190/0x1d0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30  Allocated by task 161446: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 __kasan_kmalloc+0x7b/0x90 __kmalloc_noprof+0x1a7/0x470 memstick_alloc_host+0x1f/0xe0 [memstick] rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms] platform_probe+0x60/0xe0 call_driver_probe+0x35/0x120 really_probe+0x123/0x410 __driver_probe_device+0xc7/0x1e0 driver_probe_device+0x49/0xf0 __device_attach_driver+0xc6/0x160 bus_for_each_drv+0xe4/0x160 __device_attach+0x13a/0x2b0 bus_probe_device+0xbd/0xd0 device_add+0x4a5/0x760 platform_device_add+0x189/0x370 mfd_add_device+0x587/0x5e0 mfd_add_devices+0xb1/0x130 rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb] usb_probe_interface+0x15c/0x460 call_driver_probe+0x35/0x120 really_probe+0x123/0x410 __driver_probe_device+0xc7/0x1e0 driver_probe_device+0x49/0xf0 __device_attach_driver+0xc6/0x160 bus_for_each_drv+0xe4/0x160 __device_attach+0x13a/0x2b0 rebind_marked_interfaces.isra.0+0xcc/0x110 usb_reset_device+0x352/0x410 usbdev_do_ioctl+0xe5c/0x1860 usbdev_ioctl+0xa/0x20 __x64_sys_ioctl+0xc5/0xf0 do_syscall_64+0x59/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Freed by task 161506: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 kasan_save_free_info+0x36/0x60 __kasan_slab_free+0x34/0x50 kfree+0x1fd/0x3b0 device_release+0x56/0xf0 kobject_cleanup+0x73/0x1c0 rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms] platform_remove+0x2f/0x50 device_release_driver_internal+0x24b/0x2e0 bus_remove_device+0x124/0x1d0 device_del+0x239/0x530 platform_device_del.part.0+0x19/0xe0 platform_device_unregister+0x1c/0x40 mfd_remove_devices_fn+0x167/0x170 device_for_each_child_reverse+0xc9/0x130 mfd_remove_devices+0x6e/0xa0 rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb] usb_unbind_interface+0xf3/0x3f0 device_release_driver_internal+0x24b/0x2e0 proc_disconnect_claim+0x13d/0x220 usbdev_do_ioctl+0xb5e/0x1860 usbdev_ioctl+0xa/0x20 __x64_sys_ioctl+0xc5/0xf0 do_syscall_64+0x59/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Last potentially related work creation: kasan_save_stack+0x20/0x40 kasan_record_aux_stack+0x85/0x90 insert_work+0x29/0x100 __queue_work+0x34a/0x540 call_timer_fn+0x2a/0x160 expire_timers+0x5f/0x1f0 __run_timer_base.part.0+0x1b6/0x1e0 run_timer_softirq+0x8b/0xe0 handle_softirqs+0xf9/0x360 __irq_exit_rcu+0x114/0x130 sysvec_apic_timer_interrupt+0x72/0x90 asm_sysvec_apic_timer_interrupt+0x16/0x20 Second to last potentially related work creation: kasan_save_stack+0x20/0x40 kasan_record_aux_stack+0x85/0x90 insert_work+0x29/0x100 __queue_work+0x34a/0x540 call_timer_fn+0x2a/0x160 expire_timers+0x5f/0x1f0 __run_timer_base.part.0+0x1b6/0x1e0 run_timer_softirq+0x8b/0xe0 handle_softirqs+0xf9/0x ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/memstick/host/rtsx_usb_ms.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"914c5e5bfceb9878f3056eaf4d1c88f2cbe0a185\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"9dfaf4d723c62bda8d9d1340e2e78acf0c190439\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"31f0eaed6914333f42501fc7e0f6830879f5ef2d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"52d942a5302eefb3b7a3bfee310a5a33feeedc21\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"6186fb2cd36317277a8423687982140a7f3f7841\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"b094e8e3988e02e8cef7a756c8d2cea9c12509ab\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"0067cb7d7e7c277e91a0887a3c24e71462379469\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"75123adf204f997e11bbddee48408c284f51c050\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6827ca573c03385439fdfc8b512d556dc7c54fc9\",\"lessThan\":\"4676741a3464b300b486e70585c3c9b692be1632\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/memstick/host/rtsx_usb_ms.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.292\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.236\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.180\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.133\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.86\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.22\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.10\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14.1\",\"lessThanOrEqual\":\"6.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T17:06:32.262717Z\",\"id\":\"CVE-2025-22020\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T00:44:02+00:00",
      "cve": "CVE-2025-22020",
      "id": "CVE-2025-22020",
      "initial_release_date": "2025-04-16T00:00:00+00:00",
      "product_status:fixed": "1478",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22020.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-29T01:25:37Z",
      "cve": "CVE-2025-22020",
      "id": "CVE-2025-22020",
      "initial_release_date": "2025-04-17T01:33:29Z",
      "product_status:known_affected": "385",
      "product_status:known_not_affected": "209",
      "product_status:recommended": "151",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-22020",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-22020.json",
      "version": "75"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:41:06.526Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-22020\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T17:06:32.262717Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:40:04.549Z\"}}], \"cna\": {\"title\": \"memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"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\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The reporter\u0027s own KASAN trace shows the free being driven entirely from userspace via usbfs ioctls (`USBDEVFS_DISCONNECT_CLAIM` and `USBDEVFS_RESET` through `usbdev_do_ioctl`), requiring no physical manipulation of the reader, only local access to `/dev/bus/usb/...`.\\nAC:L - The attacker controls both sides: the poll_card delayed work is perpetually re-armed every 100 jiffies while a MemStick card is powered, so an unbind issued at any moment reliably lands with a pending timer into the freed object, and the disconnect ioctl can be repeated in a loop until the heap is groomed as desired.\\nPR:L - Only an ordinary local account with usbfs access (granted to the active seat user by uaccess/plugdev udev rules on common desktop distributions) is needed; the disconnect-claim and device-reset ioctl paths perform no capability check.\\nUI:N - The attacker performs the unbind/reset ioctls itself and no action by another user is required; presence of the Realtek USB card reader is a property of the affected configuration, not victim interaction.\\nS:U - The use-after-free is confined to kernel slab memory within the same security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\\nC:H - The freed 2048-byte object is re-read by the poll worker and, after slab reclaim, the dangling `ucr`/`pdev`/`msh` pointers loaded from it can be steered to dereference attacker-chosen kernel addresses, yielding an arbitrary-read primitive well beyond the initial 8-byte KASAN-reported leak.\\nI:H - The `timer_list` and `work_struct` embedded in the freed region give a direct function-pointer hijack via `call_timer_fn()`, and `mutex_lock(\u0026ucr-\u003edev_mutex)` on a sprayed pointer provides a write primitive, so the UAF is exploitable for control-flow hijack and privilege escalation.\\nA:H - The unfixed path reliably produces a slab-use-after-free that KASAN reports and that causes kernel oops/panic in ordinary (non-KASAN) kernels, and the trigger can be repeated at will by an unprivileged local user.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"914c5e5bfceb9878f3056eaf4d1c88f2cbe0a185\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"9dfaf4d723c62bda8d9d1340e2e78acf0c190439\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"31f0eaed6914333f42501fc7e0f6830879f5ef2d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"52d942a5302eefb3b7a3bfee310a5a33feeedc21\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"6186fb2cd36317277a8423687982140a7f3f7841\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"b094e8e3988e02e8cef7a756c8d2cea9c12509ab\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"0067cb7d7e7c277e91a0887a3c24e71462379469\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"75123adf204f997e11bbddee48408c284f51c050\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6827ca573c03385439fdfc8b512d556dc7c54fc9\", \"lessThan\": \"4676741a3464b300b486e70585c3c9b692be1632\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/memstick/host/rtsx_usb_ms.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.292\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.236\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.180\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.133\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.86\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.22\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14.1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.14.*\"}, {\"status\": \"unaffected\", \"version\": \"6.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/memstick/host/rtsx_usb_ms.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/914c5e5bfceb9878f3056eaf4d1c88f2cbe0a185\"}, {\"url\": \"https://git.kernel.org/stable/c/9dfaf4d723c62bda8d9d1340e2e78acf0c190439\"}, {\"url\": \"https://git.kernel.org/stable/c/31f0eaed6914333f42501fc7e0f6830879f5ef2d\"}, {\"url\": \"https://git.kernel.org/stable/c/52d942a5302eefb3b7a3bfee310a5a33feeedc21\"}, {\"url\": \"https://git.kernel.org/stable/c/6186fb2cd36317277a8423687982140a7f3f7841\"}, {\"url\": \"https://git.kernel.org/stable/c/b094e8e3988e02e8cef7a756c8d2cea9c12509ab\"}, {\"url\": \"https://git.kernel.org/stable/c/0067cb7d7e7c277e91a0887a3c24e71462379469\"}, {\"url\": \"https://git.kernel.org/stable/c/75123adf204f997e11bbddee48408c284f51c050\"}, {\"url\": \"https://git.kernel.org/stable/c/4676741a3464b300b486e70585c3c9b692be1632\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmemstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove\\n\\nThis fixes the following crash:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\nRead of size 8 at addr ffff888136335380 by task kworker/6:0/140241\\n\\nCPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G            E      6.14.0-rc6+ #1\\nTainted: [E]=UNSIGNED_MODULE\\nHardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024\\nWorkqueue: events rtsx_usb_ms_poll_card [rtsx_usb_ms]\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x51/0x70\\n print_address_description.constprop.0+0x27/0x320\\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n print_report+0x3e/0x70\\n kasan_report+0xab/0xe0\\n ? rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n rtsx_usb_ms_poll_card+0x159/0x200 [rtsx_usb_ms]\\n ? __pfx_rtsx_usb_ms_poll_card+0x10/0x10 [rtsx_usb_ms]\\n ? __pfx___schedule+0x10/0x10\\n ? kick_pool+0x3b/0x270\\n process_one_work+0x357/0x660\\n worker_thread+0x390/0x4c0\\n ? __pfx_worker_thread+0x10/0x10\\n kthread+0x190/0x1d0\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork+0x2d/0x50\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork_asm+0x1a/0x30\\n \u003c/TASK\u003e\\n\\nAllocated by task 161446:\\n kasan_save_stack+0x20/0x40\\n kasan_save_track+0x10/0x30\\n __kasan_kmalloc+0x7b/0x90\\n __kmalloc_noprof+0x1a7/0x470\\n memstick_alloc_host+0x1f/0xe0 [memstick]\\n rtsx_usb_ms_drv_probe+0x47/0x320 [rtsx_usb_ms]\\n platform_probe+0x60/0xe0\\n call_driver_probe+0x35/0x120\\n really_probe+0x123/0x410\\n __driver_probe_device+0xc7/0x1e0\\n driver_probe_device+0x49/0xf0\\n __device_attach_driver+0xc6/0x160\\n bus_for_each_drv+0xe4/0x160\\n __device_attach+0x13a/0x2b0\\n bus_probe_device+0xbd/0xd0\\n device_add+0x4a5/0x760\\n platform_device_add+0x189/0x370\\n mfd_add_device+0x587/0x5e0\\n mfd_add_devices+0xb1/0x130\\n rtsx_usb_probe+0x28e/0x2e0 [rtsx_usb]\\n usb_probe_interface+0x15c/0x460\\n call_driver_probe+0x35/0x120\\n really_probe+0x123/0x410\\n __driver_probe_device+0xc7/0x1e0\\n driver_probe_device+0x49/0xf0\\n __device_attach_driver+0xc6/0x160\\n bus_for_each_drv+0xe4/0x160\\n __device_attach+0x13a/0x2b0\\n rebind_marked_interfaces.isra.0+0xcc/0x110\\n usb_reset_device+0x352/0x410\\n usbdev_do_ioctl+0xe5c/0x1860\\n usbdev_ioctl+0xa/0x20\\n __x64_sys_ioctl+0xc5/0xf0\\n do_syscall_64+0x59/0x170\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nFreed by task 161506:\\n kasan_save_stack+0x20/0x40\\n kasan_save_track+0x10/0x30\\n kasan_save_free_info+0x36/0x60\\n __kasan_slab_free+0x34/0x50\\n kfree+0x1fd/0x3b0\\n device_release+0x56/0xf0\\n kobject_cleanup+0x73/0x1c0\\n rtsx_usb_ms_drv_remove+0x13d/0x220 [rtsx_usb_ms]\\n platform_remove+0x2f/0x50\\n device_release_driver_internal+0x24b/0x2e0\\n bus_remove_device+0x124/0x1d0\\n device_del+0x239/0x530\\n platform_device_del.part.0+0x19/0xe0\\n platform_device_unregister+0x1c/0x40\\n mfd_remove_devices_fn+0x167/0x170\\n device_for_each_child_reverse+0xc9/0x130\\n mfd_remove_devices+0x6e/0xa0\\n rtsx_usb_disconnect+0x2e/0xd0 [rtsx_usb]\\n usb_unbind_interface+0xf3/0x3f0\\n device_release_driver_internal+0x24b/0x2e0\\n proc_disconnect_claim+0x13d/0x220\\n usbdev_do_ioctl+0xb5e/0x1860\\n usbdev_ioctl+0xa/0x20\\n __x64_sys_ioctl+0xc5/0xf0\\n do_syscall_64+0x59/0x170\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nLast potentially related work creation:\\n kasan_save_stack+0x20/0x40\\n kasan_record_aux_stack+0x85/0x90\\n insert_work+0x29/0x100\\n __queue_work+0x34a/0x540\\n call_timer_fn+0x2a/0x160\\n expire_timers+0x5f/0x1f0\\n __run_timer_base.part.0+0x1b6/0x1e0\\n run_timer_softirq+0x8b/0xe0\\n handle_softirqs+0xf9/0x360\\n __irq_exit_rcu+0x114/0x130\\n sysvec_apic_timer_interrupt+0x72/0x90\\n asm_sysvec_apic_timer_interrupt+0x16/0x20\\n\\nSecond to last potentially related work creation:\\n kasan_save_stack+0x20/0x40\\n kasan_record_aux_stack+0x85/0x90\\n insert_work+0x29/0x100\\n __queue_work+0x34a/0x540\\n call_timer_fn+0x2a/0x160\\n expire_timers+0x5f/0x1f0\\n __run_timer_base.part.0+0x1b6/0x1e0\\n run_timer_softirq+0x8b/0xe0\\n handle_softirqs+0xf9/0x\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.292\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.236\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.180\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.133\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.86\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.22\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.10\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14.1\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.15\", \"versionStartIncluding\": \"5.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:56:02.551Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-22020\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:56:02.551Z\", \"dateReserved\": \"2024-12-29T08:45:45.807Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-16T10:20:37.045Z\", \"assignerShortName\": \"Linux\"}",
      "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

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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.