{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80820",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.795Z",
        "datePublished": "2026-09-04T15:13:41.355Z",
        "dateUpdated": "2026-09-04T15:13:41.355Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-04T15:13:41.355Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/scrub/agheader.c",
                        "fs/xfs/scrub/agheader_repair.c"
                    ],
                    "versions": [
                        {
                            "version": "a12890aebb895951720ff884eab1c99a30645b29",
                            "lessThan": "599453f83458b57995290a1d31200c263e2c2691",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a12890aebb895951720ff884eab1c99a30645b29",
                            "lessThan": "159d162fe80bd56573cafde5801bd5a90a3dd1ac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a12890aebb895951720ff884eab1c99a30645b29",
                            "lessThan": "56407a61a8bb85b884de802d39635abdb0ea7408",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a12890aebb895951720ff884eab1c99a30645b29",
                            "lessThan": "527eaaefddb6ec5c83a06c9a1559960dd6361753",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/scrub/agheader.c",
                        "fs/xfs/scrub/agheader_repair.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.106",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.47",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.11",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.12.106"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.18.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.1.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/599453f83458b57995290a1d31200c263e2c2691"
                },
                {
                    "url": "https://git.kernel.org/stable/c/159d162fe80bd56573cafde5801bd5a90a3dd1ac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/56407a61a8bb85b884de802d39635abdb0ea7408"
                },
                {
                    "url": "https://git.kernel.org/stable/c/527eaaefddb6ec5c83a06c9a1559960dd6361753"
                }
            ],
            "title": "xfs: don't livelock in scrub on a circular unlinked list",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}