{
  "cveId": "CVE-2026-80673",
  "url": "https://patchblox.com/security/cve/CVE-2026-80673",
  "summary": "CVE-2026-80673 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80673 (version 7.1.5-1), released August 29, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the look-ahead attribute-list entry...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the look-ahead attribute-list entry in ntfs_external_attr_find()  When resolving an attribute lookup with a non-zero @lowest_vcn, ntfs_external_attr_find() peeks at the next $ATTRIBUTE_LIST entry to decide whether to keep searching, but bounds that not-yet-validated entry only with \u0022(u8 *)next_al_entry \u002B 6 \u003C al_end\u0022 (which proves just bytes 0..6 are in range) and \u0022(u8 *)next_al_entry \u002B length \u003C= al_end\u0022 with an attacker-controlled, non-8-aligned length. It then reads next_al_entry-\u003Elowest_vcn (an __le64 at offset 8) and the name at next_al_entry-\u003Ename_offset, both of which can lie past al_end -- the exact end of the kvmalloc\u0027d attribute-list buffer (allocated at the on-disk attr_list_size, no rounding). A crafted on-disk $ATTRIBUTE_LIST whose last entry sits a few bytes before al_end therefore yields a slab out-of-bounds read when the inode is read.  Validate the look-ahead entry with ntfs_attr_list_entry_is_valid() (added in patch 1/3) before dereferencing lowest_vcn and the name, so the same fixed-header, length and name bounds the main attribute-list walk uses now guard this read too.",
  "published": "2026-08-28T08:16:52Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00553,
  "epssPercentile": 0.46438,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-80673",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80673",
      "released": "2026-08-29T00:46:20Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}