GHSA-QCX9-4FJ7-JF29

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 double free of ns_name in aa_replace_profiles()

if ns_name is NULL after 1071 error = aa_unpack(udata, &lh, &ns_name);

and if ent->ns_name contains an ns_name in 1089 } else if (ent->ns_name) {

then ns_name is assigned the ent->ns_name 1095 ns_name = ent->ns_name;

however ent->ns_name is freed at 1262 aa_load_ent_free(ent);

and then again when freeing ns_name at 1270 kfree(ns_name);

Fix this by NULLing out ent->ns_name after it is transferred to ns_name

")

Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-23408"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-01T09:16:16Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix double free of ns_name in aa_replace_profiles()\n\nif ns_name is NULL after\n1071         error = aa_unpack(udata, \u0026lh, \u0026ns_name);\n\nand if ent-\u003ens_name contains an ns_name in\n1089                 } else if (ent-\u003ens_name) {\n\nthen ns_name is assigned the ent-\u003ens_name\n1095                         ns_name = ent-\u003ens_name;\n\nhowever ent-\u003ens_name is freed at\n1262                 aa_load_ent_free(ent);\n\nand then again when freeing ns_name at\n1270         kfree(ns_name);\n\nFix this by NULLing out ent-\u003ens_name after it is transferred to ns_name\n\n\")",
  "id": "GHSA-qcx9-4fj7-jf29",
  "modified": "2026-04-18T09:30:19Z",
  "published": "2026-04-01T09:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23408"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35f4caec1352054b9a61cfdf2bf1898073637aa0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c053ae381ce227577567d1ef10090ce7506d7a28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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