CVE-2021-47489 drm/amdgpu: Fix even more out of bound writes from debugfs

2024-05-2208:19:38

Linux

github.com

linux kernel

vulnerability

cve-2021-47489

debugfs

amdgpu

AI Score

6.8

Confidence

Low

EPSS

0.001

Percentile

19.0%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

drm/amdgpu: Fix even more out of bound writes from debugfs

CVE-2021-42327 was fixed by:

commit f23750b5b3d98653b31d4469592935ef6364ad67
Author: Thelford Williams <[email protected]>
Date: Wed Oct 13 16:04:13 2021 -0400

drm/amdgpu: fix out of bounds write

but amdgpu_dm_debugfs.c contains more of the same issue so fix the
remaining ones.

v2:
* Add missing fix in dp_max_bpc_write (Harry Wentland)

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "918698d5c2b5",
        "lessThan": "9eb4bdd554fc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "918698d5c2b5",
        "lessThan": "3f4e54bd312d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.10",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.14.16",
        "versionType": "custom",
        "lessThanOrEqual": "5.14.*"
      },
      {
        "status": "unaffected",
        "version": "5.15",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c"
    ],
    "defaultStatus": "affected"
  }
]