{
  "cveId": "CVE-2026-80869",
  "url": "https://patchblox.com/security/cve/CVE-2026-80869",
  "summary": "CVE-2026-80869 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80869 (version 7.1.5-1), released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the attribute-list entry in ntfs_rea...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the attribute-list entry in ntfs_read_inode_mount()  The $MFT attribute-list walk in ntfs_read_inode_mount() validates each entry only with \u0022(u8 *)al_entry \u002B 6 \u003E al_end\u0022 and \u0022(u8 *)al_entry \u002B le16_to_cpu(al_entry-\u003Elength) \u003E al_end\u0022, but then reads al_entry-\u003Elowest_vcn (an __le64 at offset 8) and al_entry-\u003Emft_reference (offset 16) -- fields beyond the 6 bytes proven in range. al_entry-\u003Elength is attacker-controlled and only required non-zero, so a short entry (e.g. length 8) placed at the tail passes both checks while the lowest_vcn / mft_reference reads fall past al_end.  al_end is ni-\u003Eattr_list \u002B attr_list_size (the on-disk size); the buffer is kvzalloc(round_up(attr_list_size, SECTOR_SIZE)), so the sector rounding usually absorbs the over-read -- but when attr_list_size is a multiple of SECTOR_SIZE there is no slack and a crafted $MFT attribute list produces an out-of-bounds read at mount time.  Validate the entry with ntfs_attr_list_entry_is_valid() (added in patch 1/3) before dereferencing it, matching the bound the other attribute-list walks now use. The validator already requires the length to cover the fixed header, which makes the separate \u0022!al_entry-\u003Elength\u0022 check redundant, so drop it too.",
  "published": "2026-09-04T17:16:58Z",
  "severity": "",
  "epss": 0.00198,
  "epssPercentile": 0.09574,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-80869",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80869",
      "released": "2026-09-05T01:57:10Z"
    }
  ],
  "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"
  }
}