ghsa-c9g4-75m8-v388
Vulnerability from github
Published
2025-11-12 12:30
Modified
2025-11-12 12:30
Details

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

sunrpc: fix null pointer dereference on zero-length checksum

In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes checksum.data to be set to NULL. This triggers a NPD when accessing checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that the value of checksum.len is not less than XDR_UNIT.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40129"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T11:15:42Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix null pointer dereference on zero-length checksum\n\nIn xdr_stream_decode_opaque_auth(), zero-length checksum.len causes\nchecksum.data to be set to NULL. This triggers a NPD when accessing\nchecksum.data in gss_krb5_verify_mic_v2(). This patch ensures that\nthe value of checksum.len is not less than XDR_UNIT.",
  "id": "GHSA-c9g4-75m8-v388",
  "modified": "2025-11-12T12:30:27Z",
  "published": "2025-11-12T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40129"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81cec07d303186d0d8c623ef8b5ecd3b81e94cf6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab9a70cd2386a0d70c164b0905dd66bc9af52e77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/affc03d44921f493deaae1d33151e3067a6f9f8f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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