ghsa-vrv5-vj7q-63h9
Vulnerability from github
Published
2025-09-15 15:31
Modified
2025-09-15 15:31
Details

In the Linux kernel, the following vulnerability has been resolved:

ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address

On a Packard Bell Dot SC (Intel Atom N2600 model) there is a FPDT table which contains invalid physical addresses, with high bits set which fall outside the range of the CPU-s supported physical address range.

Calling acpi_os_map_memory() on such an invalid phys address leads to the below WARN_ON in ioremap triggering resulting in an oops/stacktrace.

Add code to verify the physical address before calling acpi_os_map_memory() to fix / avoid the oops.

[ 1.226900] ioremap: invalid physical address 3001000000000000 [ 1.226949] ------------[ cut here ]------------ [ 1.226962] WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:200 __ioremap_caller.cold+0x43/0x5f [ 1.226996] Modules linked in: [ 1.227016] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc3+ #490 [ 1.227029] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013 [ 1.227038] RIP: 0010:__ioremap_caller.cold+0x43/0x5f [ 1.227054] Code: 96 00 00 e9 f8 af 24 ff 89 c6 48 c7 c7 d8 0c 84 99 e8 6a 96 00 00 e9 76 af 24 ff 48 89 fe 48 c7 c7 a8 0c 84 99 e8 56 96 00 00 <0f> 0b e9 60 af 24 ff 48 8b 34 24 48 c7 c7 40 0d 84 99 e8 3f 96 00 [ 1.227067] RSP: 0000:ffffb18c40033d60 EFLAGS: 00010286 [ 1.227084] RAX: 0000000000000032 RBX: 3001000000000000 RCX: 0000000000000000 [ 1.227095] RDX: 0000000000000001 RSI: 00000000ffffdfff RDI: 00000000ffffffff [ 1.227105] RBP: 3001000000000000 R08: 0000000000000000 R09: ffffb18c40033c18 [ 1.227115] R10: 0000000000000003 R11: ffffffff99d62fe8 R12: 0000000000000008 [ 1.227124] R13: 0003001000000000 R14: 0000000000001000 R15: 3001000000000000 [ 1.227135] FS: 0000000000000000(0000) GS:ffff913a3c080000(0000) knlGS:0000000000000000 [ 1.227146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.227156] CR2: 0000000000000000 CR3: 0000000018c26000 CR4: 00000000000006e0 [ 1.227167] Call Trace: [ 1.227176] [ 1.227185] ? acpi_os_map_iomem+0x1c9/0x1e0 [ 1.227215] ? kmem_cache_alloc_trace+0x187/0x370 [ 1.227254] acpi_os_map_iomem+0x1c9/0x1e0 [ 1.227288] acpi_init_fpdt+0xa8/0x253 [ 1.227308] ? acpi_debugfs_init+0x1f/0x1f [ 1.227339] do_one_initcall+0x5a/0x300 [ 1.227406] ? rcu_read_lock_sched_held+0x3f/0x80 [ 1.227442] kernel_init_freeable+0x28b/0x2cc [ 1.227512] ? rest_init+0x170/0x170 [ 1.227538] kernel_init+0x16/0x140 [ 1.227552] ret_from_fork+0x1f/0x30 [ 1.227639] [ 1.227647] irq event stamp: 186819 [ 1.227656] hardirqs last enabled at (186825): [] __up_console_sem+0x5e/0x70 [ 1.227672] hardirqs last disabled at (186830): [] __up_console_sem+0x43/0x70 [ 1.227686] softirqs last enabled at (186576): [] __irq_exit_rcu+0xed/0x160 [ 1.227701] softirqs last disabled at (186569): [] __irq_exit_rcu+0xed/0x160 [ 1.227715] ---[ end trace 0000000000000000 ]---

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2022-50320"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: tables: FPDT: Don\u0027t call acpi_os_map_memory() on invalid phys address\n\nOn a Packard Bell Dot SC (Intel Atom N2600 model) there is a FPDT table\nwhich contains invalid physical addresses, with high bits set which fall\noutside the range of the CPU-s supported physical address range.\n\nCalling acpi_os_map_memory() on such an invalid phys address leads to\nthe below WARN_ON in ioremap triggering resulting in an oops/stacktrace.\n\nAdd code to verify the physical address before calling acpi_os_map_memory()\nto fix / avoid the oops.\n\n[    1.226900] ioremap: invalid physical address 3001000000000000\n[    1.226949] ------------[ cut here ]------------\n[    1.226962] WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:200 __ioremap_caller.cold+0x43/0x5f\n[    1.226996] Modules linked in:\n[    1.227016] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc3+ #490\n[    1.227029] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013\n[    1.227038] RIP: 0010:__ioremap_caller.cold+0x43/0x5f\n[    1.227054] Code: 96 00 00 e9 f8 af 24 ff 89 c6 48 c7 c7 d8 0c 84 99 e8 6a 96 00 00 e9 76 af 24 ff 48 89 fe 48 c7 c7 a8 0c 84 99 e8 56 96 00 00 \u003c0f\u003e 0b e9 60 af 24 ff 48 8b 34 24 48 c7 c7 40 0d 84 99 e8 3f 96 00\n[    1.227067] RSP: 0000:ffffb18c40033d60 EFLAGS: 00010286\n[    1.227084] RAX: 0000000000000032 RBX: 3001000000000000 RCX: 0000000000000000\n[    1.227095] RDX: 0000000000000001 RSI: 00000000ffffdfff RDI: 00000000ffffffff\n[    1.227105] RBP: 3001000000000000 R08: 0000000000000000 R09: ffffb18c40033c18\n[    1.227115] R10: 0000000000000003 R11: ffffffff99d62fe8 R12: 0000000000000008\n[    1.227124] R13: 0003001000000000 R14: 0000000000001000 R15: 3001000000000000\n[    1.227135] FS:  0000000000000000(0000) GS:ffff913a3c080000(0000) knlGS:0000000000000000\n[    1.227146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    1.227156] CR2: 0000000000000000 CR3: 0000000018c26000 CR4: 00000000000006e0\n[    1.227167] Call Trace:\n[    1.227176]  \u003cTASK\u003e\n[    1.227185]  ? acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227215]  ? kmem_cache_alloc_trace+0x187/0x370\n[    1.227254]  acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227288]  acpi_init_fpdt+0xa8/0x253\n[    1.227308]  ? acpi_debugfs_init+0x1f/0x1f\n[    1.227339]  do_one_initcall+0x5a/0x300\n[    1.227406]  ? rcu_read_lock_sched_held+0x3f/0x80\n[    1.227442]  kernel_init_freeable+0x28b/0x2cc\n[    1.227512]  ? rest_init+0x170/0x170\n[    1.227538]  kernel_init+0x16/0x140\n[    1.227552]  ret_from_fork+0x1f/0x30\n[    1.227639]  \u003c/TASK\u003e\n[    1.227647] irq event stamp: 186819\n[    1.227656] hardirqs last  enabled at (186825): [\u003cffffffff98184a6e\u003e] __up_console_sem+0x5e/0x70\n[    1.227672] hardirqs last disabled at (186830): [\u003cffffffff98184a53\u003e] __up_console_sem+0x43/0x70\n[    1.227686] softirqs last  enabled at (186576): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227701] softirqs last disabled at (186569): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227715] ---[ end trace 0000000000000000 ]---",
  "id": "GHSA-vrv5-vj7q-63h9",
  "modified": "2025-09-15T15:31:27Z",
  "published": "2025-09-15T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50320"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16046a716c8e1f447909bec9b478d58e6e25e513"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/211391bf04b3c74e250c566eeff9cf808156c693"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30eca146c89d216dda95868ce00a2d35cf73d5a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90bfc9ae875dfbed2e6089516520204cd431dba3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.