{
  "cveId": "CVE-2026-80955",
  "url": "https://patchblox.com/security/cve/CVE-2026-80955",
  "summary": "CVE-2026-80955 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80955 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dm-pcache: fix use-after-free and invalid seg op...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dm-pcache: fix use-after-free and invalid seg operations in kset_replay()  In kset_replay, when key-\u003Eseg_gen is stale (key-\u003Eseg_gen \u003C key-\u003Ecache_pos.cache_seg-\u003Egen), cache_key_put(key) is called but then key-\u003Ecache_pos.cache_seg is accessed as the argument to cache_seg_get(). This is a use-after-free on the freed key memory. Although mempool recycled memory is not immediately reclaimed or overwritten in practice, this is still a potential UAF bug.  Additionally, for expired invalid keys, setting the cache-\u003Eseg_map bit and calling cache_seg_get() is unreasonable since the corresponding segment data is no longer valid.  Fix both issues by moving cache_seg_get() and __set_bit() after the gen check, so they only execute for valid keys, and using continue to skip invalid keys.",
  "published": "2026-09-11T20:19:01Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00168,
  "epssPercentile": 0.06214,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-80955",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80955",
      "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"
  }
}