GHSA-RR4H-G2X9-F96P

Vulnerability from github – Published: 2026-04-01 09:31 – Updated: 2026-04-18 09:30
VLAI?
Details

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

apparmor: fix memory leak in verify_header

The function sets *ns = NULL on every call, leaking the namespace string allocated in previous iterations when multiple profiles are unpacked. This also breaks namespace consistency checking since *ns is always NULL when the comparison is made.

Remove the incorrect assignment. The caller (aa_unpack) initializes *ns to NULL once before the loop, which is sufficient.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23403"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-01T09:16:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix memory leak in verify_header\n\nThe function sets `*ns = NULL` on every call, leaking the namespace\nstring allocated in previous iterations when multiple profiles are\nunpacked. This also breaks namespace consistency checking since *ns\nis always NULL when the comparison is made.\n\nRemove the incorrect assignment.\nThe caller (aa_unpack) initializes *ns to NULL once before the loop,\nwhich is sufficient.",
  "id": "GHSA-rr4h-g2x9-f96p",
  "modified": "2026-04-18T09:30:19Z",
  "published": "2026-04-01T09:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23403"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b79abcb3c985e153fcf9d395e1d4336081aabc2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d678eb0fe55c9195d9a253e8c5b82a87b930737"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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