CVE-2021-47431 drm/amdgpu: fix gart.bo pin_count leak

2024-05-2115:04:16

Linux

github.com

linux kernel

vulnerability

drm/amdgpu

gart.bo

pin_count

leak

sriov

driver unload

fix

cve-2021-47431

AI Score

6.7

Confidence

Low

EPSS

Percentile

15.5%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

drm/amdgpu: fix gart.bo pin_count leak

gmc_v{9,10}_0_gart_disable() isn’t called matched with
correspoding gart_enbale function in SRIOV case. This will
lead to gart.bo pin_count leak on driver unload.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "83d857d6b096",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "621ddffb70db",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "18d1c5ea3798",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "66805763a97f",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c",
      "drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "unaffected",
        "version": "5.4.154",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.74",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.14.13",
        "versionType": "custom",
        "lessThanOrEqual": "5.14.*"
      },
      {
        "status": "unaffected",
        "version": "5.15",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c",
      "drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c"
    ],
    "defaultStatus": "affected"
  }
]