{
  "cveId": "CVE-2026-98136",
  "url": "https://patchblox.com/security/cve/CVE-2026-98136",
  "summary": "CVE-2026-98136 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98136 (version 7.2.7-1), released October 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound $AttrDef table walk to the loaded ta...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound $AttrDef table walk to the loaded table size  ntfs_attr_find_in_attrdef() walks the in-memory $AttrDef table, but the loop condition bounds only the start of each entry, not the whole entry:  \tfor (ad = vol-\u003Eattrdef; (u8 *)ad - (u8 *)vol-\u003Eattrdef \u003C \t\t\tvol-\u003Eattrdef_size \u0026\u0026 ad-\u003Etype; \u002B\u002Bad)  struct attr_def is 160 bytes; the guard reads ad-\u003Etype at offset 128 and the loop body reads further fields. vol-\u003Eattrdef is kvzalloc(i_size), where i_size is the on-disk $AttrDef data size, checked in load_and_init_attrdef() only as 0 \u003C i_size \u003C= 0x7fffffff. A volume whose $AttrDef data size is smaller than one entry (e.g. 120 bytes) makes the read of ad-\u003Etype run past the allocation. Creating a file reaches this through ntfs_attr_size_bounds_check() and reads out of bounds:    BUG: KASAN: slab-out-of-bounds in ntfs_attr_find_in_attrdef\u002B0x66/0xa0   Read of size 4 at addr ffff888005833280 by task init/1    ntfs_attr_find_in_attrdef    ntfs_attr_size_bounds_check    ntfs_attr_can_be_non_resident    ntfs_attr_add  Require the whole entry to lie within attrdef_size in the loop guard, and reject at mount a $AttrDef too small to hold one attr_def entry.",
  "published": "2026-09-25T11:17:45Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.0011,
  "epssPercentile": 0.01264,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.7-1",
      "fix": "DEBIAN-CVE-2026-98136",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98136",
      "released": "2026-10-02T21:04:56Z"
    }
  ],
  "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"
  }
}