ghsa-w7xv-cpcr-3q3h
Vulnerability from github
Published
2025-10-01 12:30
Modified
2025-10-01 12:30
Details

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

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()

nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and free the memory.Thus, when nouveau_bo_init() returns an error, the gem object has already been released. Then the call to nouveau_bo_ref() will use the freed "nvbo->bo" and lead to a use-after-free bug.

We should delete the call to nouveau_bo_ref() to avoid the use-after-free.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50454"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()\n\nnouveau_bo_init() is backed by ttm_bo_init() and ferries its return code\nback to the caller. On failures, ttm will call nouveau_bo_del_ttm() and\nfree the memory.Thus, when nouveau_bo_init() returns an error, the gem\nobject has already been released. Then the call to nouveau_bo_ref() will\nuse the freed \"nvbo-\u003ebo\" and lead to a use-after-free bug.\n\nWe should delete the call to nouveau_bo_ref() to avoid the use-after-free.",
  "id": "GHSA-w7xv-cpcr-3q3h",
  "modified": "2025-10-01T12:30:28Z",
  "published": "2025-10-01T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50454"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3aeda2fe6517cc52663d4ce3588dd43f0d4124a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/540dfd188ea2940582841c1c220bd035a7db0e51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56ee9577915dc06f55309901012a9ef68dbdb5a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d6093c49c098d86c7b136aba9922df44aeb6944"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d80473e9f12548ac05b36af4fb9ce80f2f73509"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/861f085f81fd569b02cc2c11165a9e6cca144424"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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