{
  "cveId": "CVE-2026-40706",
  "url": "https://patchblox.com/security/cve/CVE-2026-40706",
  "summary": "CVE-2026-40706 is fixed in 4 products on 1 platform, first by libntfs-3g89t64 1:2022.10.3-5ubuntu1, released April 21, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ntfs-3g: In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.c that...",
  "description": "In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESS_DENIED ACEs containing WRITE_OWNER from distinct group SIDs.",
  "published": "2026-04-21T05:00:00Z",
  "severity": "high",
  "cvss": 8.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00165,
  "epssPercentile": 0.05774,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libntfs-3g89",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:2021.8.22-3ubuntu1.3",
      "fix": "libntfs-3g89 1:2021.8.22-3ubuntu1.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libntfs-3g89-1-2021.8.22-3ubuntu1.3",
      "released": "2026-04-30T14:06:06Z"
    },
    {
      "platform": "linux",
      "product": "libntfs-3g89t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1:2022.10.3-1.2ubuntu3.1",
      "fix": "libntfs-3g89t64 1:2022.10.3-1.2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libntfs-3g89t64-1-2022.10.3-1.2ubuntu3.1",
      "released": "2026-04-30T14:06:10Z"
    },
    {
      "platform": "linux",
      "product": "libntfs-3g89t64",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2022.10.3-5ubuntu0.25.10.1",
      "fix": "libntfs-3g89t64 1:2022.10.3-5ubuntu0.25.10.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libntfs-3g89t64-1-2022.10.3-5ubuntu0.25.10.1",
      "released": "2026-04-30T14:06:15Z"
    },
    {
      "platform": "linux",
      "product": "libntfs-3g89t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2022.10.3-5ubuntu1",
      "fix": "libntfs-3g89t64 1:2022.10.3-5ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libntfs-3g89t64-1-2022.10.3-5ubuntu1",
      "released": "2026-04-21T05:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1:2022.10.3-1\u002Bdeb12u3",
      "fix": "DEBIAN-CVE-2026-40706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40706",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:2022.10.3-5\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-40706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40706",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Debian 14",
      "fixedVersion": "1:2026.2.25-1",
      "fix": "DEBIAN-CVE-2026-40706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40706",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:2021.8.22-3ubuntu1.3",
      "fix": "ntfs-3g 1:2021.8.22-3ubuntu1.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ntfs-3g-1-2021.8.22-3ubuntu1.3",
      "released": "2026-04-30T14:06:06Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1:2022.10.3-1.2ubuntu3.1",
      "fix": "ntfs-3g 1:2022.10.3-1.2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ntfs-3g-1-2022.10.3-1.2ubuntu3.1",
      "released": "2026-04-30T14:06:10Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2022.10.3-5ubuntu0.25.10.1",
      "fix": "ntfs-3g 1:2022.10.3-5ubuntu0.25.10.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-ntfs-3g-1-2022.10.3-5ubuntu0.25.10.1",
      "released": "2026-04-30T14:06:15Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2022.10.3-5ubuntu1",
      "fix": "ntfs-3g 1:2022.10.3-5ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ntfs-3g-1-2022.10.3-5ubuntu1",
      "released": "2026-04-21T05:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g_ntfsprogs",
      "release": "sles 15.6",
      "fixedVersion": "2022.5.17-150000.3.24.1",
      "fix": "SUSE-SU-2026:1571-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1571-1",
      "released": "2026-04-23T15:52:09Z"
    },
    {
      "platform": "linux",
      "product": "ntfs-3g_ntfsprogs",
      "release": "sles 15.7",
      "fixedVersion": "2022.5.17-150000.3.24.1",
      "fix": "SUSE-SU-2026:1571-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1571-1",
      "released": "2026-04-23T15:52:09Z"
    }
  ],
  "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"
  }
}