{
  "cveId": "CVE-2026-23404",
  "url": "https://patchblox.com/security/cve/CVE-2026-23404",
  "summary": "CVE-2026-23404 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-23404, released April 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "apparmor: replace recursive profile removal with iterative approach",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  apparmor: replace recursive profile removal with iterative approach  The profile removal code uses recursion when removing nested profiles, which can lead to kernel stack exhaustion and system crashes.  Reproducer:   $ pf=\u0027a\u0027; for ((i=0; i\u003C1024; i\u002B\u002B)); do       echo -e \u0022profile $pf { \\n }\u0022 | apparmor_parser -K -a;       pf=\u0022$pf//x\u0022;   done   $ echo -n a \u003E /sys/kernel/security/apparmor/.remove  Replace the recursive __aa_profile_list_release() approach with an iterative approach in __remove_profile(). The function repeatedly finds and removes leaf profiles until the entire subtree is removed, maintaining the same removal semantic without recursion.",
  "published": "2026-04-01T09:16:15Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00184,
  "epssPercentile": 0.08009,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23404",
  "fixes": [
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1.150600.12.52.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1.150700.17.33.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP6_Update_26",
      "release": "sles 15.6",
      "fixedVersion": "1-150600.13.3.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP7_Update_15",
      "release": "sles 15.7",
      "fixedVersion": "1-150700.15.3.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.112.1",
      "fix": "SUSE-SU-2026:2195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2195-1",
      "released": "2026-07-01T08:17:32Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.55.1",
      "fix": "SUSE-SU-2026:2238-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1",
      "released": "2026-06-30T10:03:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.164-1",
      "fix": "DEBIAN-CVE-2026-23404",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23404",
      "released": "2026-04-01T09:16:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.74-2",
      "fix": "DEBIAN-CVE-2026-23404",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23404",
      "released": "2026-04-01T09:16:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.6-2",
      "fix": "DEBIAN-CVE-2026-23404",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23404",
      "released": "2026-04-01T09:16:15Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}