GHSA-QGHG-5QFP-W5R4

Vulnerability from github – Published: 2024-06-18 21:30 – Updated: 2025-10-01 15:30
VLAI
Details

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

KEYS: trusted: Do not use WARN when encode fails

When asn1_encode_sequence() fails, WARN is not the correct solution.

  1. asn1_encode_sequence() is not an internal function (located in lib/asn1_encode.c).
  2. Location is known, which makes the stack trace useless.
  3. Results a crash if panic_on_warn is set.

It is also noteworthy that the use of WARN is undocumented, and it should be avoided unless there is a carefully considered rationale to use it.

Replace WARN with pr_err, and print the return value instead, which is only useful piece of information.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-36975"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-18T20:15:13Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: Do not use WARN when encode fails\n\nWhen asn1_encode_sequence() fails, WARN is not the correct solution.\n\n1. asn1_encode_sequence() is not an internal function (located\n   in lib/asn1_encode.c).\n2. Location is known, which makes the stack trace useless.\n3. Results a crash if panic_on_warn is set.\n\nIt is also noteworthy that the use of WARN is undocumented, and it\nshould be avoided unless there is a carefully considered rationale to\nuse it.\n\nReplace WARN with pr_err, and print the return value instead, which is\nonly useful piece of information.",
  "id": "GHSA-qghg-5qfp-w5r4",
  "modified": "2025-10-01T15:30:29Z",
  "published": "2024-06-18T21:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-36975"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/050bf3c793a07f96bd1e2fd62e1447f731ed733b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c652e1e10676f942149052d9329b8bf2703529a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/681935009fec3fc22af97ee312d4a24ccf3cf087"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96f650995c70237b061b497c66755e32908f8972"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d32c6e09f7c4bec3ebc4941323f0aa6366bc1487"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff91cc12faf798f573dab2abc976c1d5b1862fea"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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