{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1d57628ff95b32d5cfa8d8f50e07690c161e9cf0"
            },
            {
              "fixed": "663ee2f3824a505b983162de44134e789f8230da"
            },
            {
              "fixed": "5311dfc5cd70edccd110257e3f30b2c1dcd3768d"
            },
            {
              "fixed": "16c3b3a326e70f246a605b3dc27b7f83ba4743e3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80957.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: detect a cycle in the last-kset chain during replay\n\ncache_replay() follows the on-media last-kset chain by next_cache_seg_id\nwith no cond_resched(). A forged chain that points back into a segment it\nhas already visited makes the replay loop follow it forever.\n\nCap the last-kset hops at cache-\u003en_segs; a valid chain visits each segment\nat most once.",
  "id": "CVE-2026-80957",
  "modified": "2026-09-13T03:30:47.743031072Z",
  "published": "2026-09-11T19:42:25.194Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16c3b3a326e70f246a605b3dc27b7f83ba4743e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5311dfc5cd70edccd110257e3f30b2c1dcd3768d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/663ee2f3824a505b983162de44134e789f8230da"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80957.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80957"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "dm-pcache: detect a cycle in the last-kset chain during replay"
}