{
  "cveId": "CVE-2026-80960",
  "url": "https://patchblox.com/security/cve/CVE-2026-80960",
  "summary": "CVE-2026-80960 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80960 (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: validate on-media seg_num against the...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dm-pcache: validate on-media seg_num against the cache device size  seg_num is read from the crc32c-only superblock, so whoever supplies the cache device on a table load (CAP_SYS_ADMIN) controls it. It sizes cache-\u003Esegments[] and is the value every later on-media segment id is bounded against, yet it is never checked against the device. Because cache_dev-\u003Emapping is the direct map of the pmem, CACHE_DEV_SEGMENT() for a segment id past the device resolves to ordinary kernel memory beyond the mapping; a new-cache init reaching such an id has cache_seg_init() -\u003E cache_dev_zero_range() memset() 12 KiB over that memory -- an out-of-bounds write into the kernel heap at table load. A zero seg_num makes the segment allocations ZERO_SIZE_PTR.  Reject a seg_num that is zero, larger than the device can hold, or larger than PCACHE_CACHE_SEGS_MAX before it is used.",
  "published": "2026-09-11T20:19:01Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10796,
  "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-2026-80960",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80960",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "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"
  }
}