ghsa-89m2-2g6w-whvw
Vulnerability from github
Published
2025-05-02 18:31
Modified
2025-05-02 18:31
Details

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

drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes

[WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value:

shift exponent 4294966273 is too large for 32-bit type 'int'

[HOW]

In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53077"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-02T16:15:26Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes\n\n[WHY]\nWhen PTEBufferSizeInRequests is zero, UBSAN reports the following\nwarning because dml_log2 returns an unexpected negative value:\n\n  shift exponent 4294966273 is too large for 32-bit type \u0027int\u0027\n\n[HOW]\n\nIn the case PTEBufferSizeInRequests is zero, skip the dml_log2() and\nassign the result directly.",
  "id": "GHSA-89m2-2g6w-whvw",
  "modified": "2025-05-02T18:31:35Z",
  "published": "2025-05-02T18:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53077"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/031f196d1b1b6d5dfcb0533b431e3ab1750e6189"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7257070be70e19a9138f39009c1a26c83a8a7cfa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a16394b5d661afec9a264fecac3abd87aea439ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bec1bea2fa974e63f6059c33edde669c7894d0bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e12b95680821b9880cd9992c0f3555389363604f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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