CVE-2024-35786 drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf

2024-05-1712:24:31

Linux

github.com

linux kernel vulnerability

drm/nouveau

stale mutex

AI Score

6.8

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/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf

If VM_BIND is enabled on the client the legacy submission ioctl can’t be
used, however if a client tries to do so regardless it will return an
error. In this case the clients mutex remained unlocked leading to a
deadlock inside nouveau_drm_postclose or any other nouveau ioctl call.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b88baab82871",
        "lessThan": "c288a61a48dd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b88baab82871",
        "lessThan": "b466416bdd6e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b88baab82871",
        "lessThan": "daf8739c3322",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/nouveau/nouveau_gem.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.6"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.6",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "6.6.24",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7.12",
        "versionType": "custom",
        "lessThanOrEqual": "6.7.*"
      },
      {
        "status": "unaffected",
        "version": "6.8",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/nouveau/nouveau_gem.c"
    ],
    "defaultStatus": "affected"
  }
]