CVE-2024-43867 drm/nouveau: prime: fix refcount underflow

2024-08-2023:50:50

Linux

www.cve.org

vulnerability resolution

linux kernel

drm/nouveau

EPSS

Percentile

10.9%

JSON

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

drm/nouveau: prime: fix refcount underflow

Calling nouveau_bo_ref() on a nouveau_bo without initializing it (and
hence the backing ttm_bo) leads to a refcount underflow.

Instead of calling nouveau_bo_ref() in the unwind path of
drm_gem_object_init(), clean things up manually.

(cherry picked from commit 1b93f3e89d03cfc576636e195466a0d728ad8de5)

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/nouveau/nouveau_prime.c"
    ],
    "versions": [
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "3bcb8bba72ce",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "906372e753c5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "16998763c62b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "ebebba4d357b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "f23cd66933fe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
        "lessThan": "2a1b327d57a8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ab9ccb96a6e6",
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        "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/nouveau/nouveau_prime.c"
    ],
    "versions": [
      {
        "version": "3.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.9",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.282",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.224",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.165",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.104",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.45",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.4",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]