ghsa-qxqc-pxc7-f648
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/amdkfd: Fix UBSAN shift-out-of-bounds warning

If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up doing a shift operation where the number of bits shifted equals number of bits in the operand. This behaviour is undefined.

Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the count is >= number of bits in the operand.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472

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{
  "affected": [],
  "aliases": [
    "CVE-2021-4460"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:31Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\n\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\ndoing a shift operation where the number of bits shifted equals\nnumber of bits in the operand. This behaviour is undefined.\n\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\ncount is \u003e= number of bits in the operand.\n\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472",
  "id": "GHSA-qxqc-pxc7-f648",
  "modified": "2025-10-01T12:30:27Z",
  "published": "2025-10-01T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4460"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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