{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ad5ff3db53c68c2f12936bc74ea5dfe0af943592"
            },
            {
              "fixed": "07cf6320f40ea2ccfad63728cff34ecb309d03da"
            },
            {
              "fixed": "15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c"
            },
            {
              "fixed": "0baadb0eece2c4d939db10d3c323b4652ac79a58"
            },
            {
              "fixed": "3bb7db43e32190c973d4019037cedb7895920184"
            },
            {
              "fixed": "9063d7e2615f4a7ab321de6b520e23d370e58816"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.4.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.77"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.18"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23269.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: validate DFA start states are in bounds in unpack_pdb\n\nStart states are read from untrusted data and used as indexes into the\nDFA state tables. The aa_dfa_next() function call in unpack_pdb() will\naccess dfa-\u003etables[YYTD_ID_BASE][start], and if the start state exceeds\nthe number of states in the DFA, this results in an out-of-bound read.\n\n==================================================================\n BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360\n Read of size 4 at addr ffff88811956fb90 by task su/1097\n ...\n\nReject policies with out-of-bounds start states during unpacking\nto prevent the issue.",
  "id": "CVE-2026-23269",
  "modified": "2026-04-01T23:07:53.603598612Z",
  "published": "2026-03-18T17:54:42.988Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07cf6320f40ea2ccfad63728cff34ecb309d03da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0baadb0eece2c4d939db10d3c323b4652ac79a58"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bb7db43e32190c973d4019037cedb7895920184"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9063d7e2615f4a7ab321de6b520e23d370e58816"
    },
    {
      "type": "WEB",
      "url": "https://www.qualys.com/2026/03/10/crack-armor.txt"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23269.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23269"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "apparmor: validate DFA start states are in bounds in unpack_pdb"
}