{
  "cveId": "CVE-2026-80638",
  "url": "https://patchblox.com/security/cve/CVE-2026-80638",
  "summary": "CVE-2026-80638 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80638 (version 7.1.5-1), released August 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ocfs2: fix out-of-bounds write in ocfs2_remove_r...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent  [BUG] Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write.  [CAUSE] When the last leaf block is removed from a refcount tree, ocfs2_remove_refcount_extent() converts the root back to leaf mode with a bulk memset on \u0026rb-\u003Erf_records. rf_records sits in an anonymous union with rf_list. rf_list.l_tree_depth aliases rf_records.rl_count, and is 0 for a single-level tree. With rl_count equal to 0, the memset writes past the 16-byte declared size of rf_records, which the fortify checker catches.  [FIX] Replace the bulk memset on \u0026rb-\u003Erf_records with a correctly-bounded memset on rl_recs[] alone, after setting rl_count to the correct value.",
  "published": "2026-08-28T08:16:48Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00508,
  "epssPercentile": 0.43652,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-80638",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80638",
      "released": "2026-08-29T00:46:20Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}