ghsa-2xch-4r76-8cgw
Vulnerability from github
Published
2024-10-21 15:32
Modified
2024-10-22 18:32
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

KEYS: prevent NULL pointer dereference in find_asymmetric_key()

In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway.

Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks.

Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-47743"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T13:15:04Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: prevent NULL pointer dereference in find_asymmetric_key()\n\nIn find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2}\narguments, the kernel will first emit WARN but then have an oops\nbecause id_2 gets dereferenced anyway.\n\nAdd the missing id_2 check and move WARN_ON() to the final else branch\nto avoid duplicate NULL checks.\n\nFound by Linux Verification Center (linuxtesting.org) with Svace static\nanalysis tool.",
  "id": "GHSA-2xch-4r76-8cgw",
  "modified": "2024-10-22T18:32:09Z",
  "published": "2024-10-21T15:32:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47743"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee"
    }
  ],
  "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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