{
  "cveId": "CVE-2026-80956",
  "url": "https://patchblox.com/security/cve/CVE-2026-80956",
  "summary": "CVE-2026-80956 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80956 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dm-pcache: only hand out initialized cache segme...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dm-pcache: only hand out initialized cache segments  get_cache_segment() scans the segment map up to cache-\u003En_segs, the physical device segment count, but cache_segs_init() only initializes the first cache_info-\u003En_segs segments. A crafted image with cache_info-\u003En_segs smaller than the device count leaves the remaining pcache_cache_segment structs zeroed (segment.data == NULL), and the allocator can hand one to cache_kset_close(), which writes through the returned segment\u0027s data pointer with no NULL check.  Bound the allocator\u0027s search to cache_info-\u003En_segs so only initialized segments are ever returned. A conforming cache sets n_segs equal to the device segment count, so this rejects nothing legitimate.",
  "published": "2026-09-11T20:19:01Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10802,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-80956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80956",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}