{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a12890aebb895951720ff884eab1c99a30645b29"
            },
            {
              "fixed": "599453f83458b57995290a1d31200c263e2c2691"
            },
            {
              "fixed": "159d162fe80bd56573cafde5801bd5a90a3dd1ac"
            },
            {
              "fixed": "56407a61a8bb85b884de802d39635abdb0ea7408"
            },
            {
              "fixed": "527eaaefddb6ec5c83a06c9a1559960dd6361753"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "fixed": "6.12.106"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.47"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80820.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't livelock in scrub on a circular unlinked list\n\nLOLLM points out that online fsck can livelock if an unlinked inode list\ncontains a loop.  Use a bitmap to detect cycles.",
  "id": "CVE-2026-80820",
  "modified": "2026-09-06T03:31:05.216307532Z",
  "published": "2026-09-04T15:13:41.355Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/159d162fe80bd56573cafde5801bd5a90a3dd1ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/527eaaefddb6ec5c83a06c9a1559960dd6361753"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56407a61a8bb85b884de802d39635abdb0ea7408"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/599453f83458b57995290a1d31200c263e2c2691"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80820.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80820"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "xfs: don't livelock in scrub on a circular unlinked list"
}