{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "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setting the cache-\u003eseg_map bit and calling cache_seg_get() is unreasonable since the corresponding segment data is no longer valid.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.",
  "id": "DEBIAN-CVE-2026-80955",
  "modified": "2026-09-14T08:47:47.437093054Z",
  "published": "2026-09-11T20:19:01.287Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80955"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-80955"
  ]
}