CVE-2024-46803 drm/amdkfd: Check debug trap enable before write dbg_ev_file

2024-09-2712:35:49

Linux

www.cve.org

linux kernel

vulnerability

resolved

drm/amdkfd

debug trap enable

write dbg_ev_file

work queue

interrupt context

null pointer access

debug_event_workarea

EPSS

Percentile

16.3%

JSON

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

drm/amdkfd: Check debug trap enable before write dbg_ev_file

In interrupt context, write dbg_ev_file will be run by work queue. It
will cause write dbg_ev_file execution after debug_trap_disable, which
will cause NULL pointer access.
v2: cancel work “debug_event_workarea” before set dbg_ev_file as NULL.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_debug.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "e6ea3b8fe398",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "820dcbd38a77",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "547033b59306",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_debug.c"
    ],
    "versions": [
      {
        "version": "6.6.50",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.9",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]