ghsa-wr5g-mfhw-rpfj
Vulnerability from github
Published
2025-10-13 15:31
Modified
2025-10-13 15:31
Details

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

crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg

Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state.

Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39964"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-13T14:15:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: af_alg - Disallow concurrent writes in af_alg_sendmsg\n\nIssuing two writes to the same af_alg socket is bogus as the\ndata will be interleaved in an unpredictable fashion.  Furthermore,\nconcurrent writes may create inconsistencies in the internal\nsocket state.\n\nDisallow this by adding a new ctx-\u003ewrite field that indiciates\nexclusive ownership for writing.",
  "id": "GHSA-wr5g-mfhw-rpfj",
  "modified": "2025-10-13T15:31:18Z",
  "published": "2025-10-13T15:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39964"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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