CVE-2026-80532

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80532", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.764Z", "datePublished": "2026-08-26T14:37:09.194Z", "dateUpdated": "2026-08-26T14:37:09.194Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-26T14:37:09.194Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix another iunlink infinite loop bug in online fsck\n\nxrep_iunlink_resolve_bucket is supposed to reconstruct as much of the\nincore prev and next unlinked list pointers based on what it finds on\ndisk and in memory before we move on to relinking the truly lost inodes\nback into the unlinked list. However, it's still vulnerable to infinite\nloops that come in via the next_unlinked pointers.\n\nFix this problem by remembering which inodes we've already seen and\nchecking new agino pointers against that. If a bit is already set,\neither this is a loop or the inode has nonzero link count. We'll deal\nwith the second case in a subsequent patch."}], "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_repair.c", "fs/xfs/scrub/trace.h"], "versions": [{"version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "lessThan": "24aec8c88539a382355761a9b924046885b6be40", "status": "affected", "versionType": "git"}, {"version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "lessThan": "b6baf0db357fb84f3f3cfd33383a00de71a5a1c3", "status": "affected", "versionType": "git"}, {"version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "lessThan": "23690064f235a88a00c04f2e49f36bfb54ae560d", "status": "affected", "versionType": "git"}, {"version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "lessThan": "6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622", "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_repair.c", "fs/xfs/scrub/trace.h"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.105", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "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": "6.10", "versionEndExcluding": "6.12.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/24aec8c88539a382355761a9b924046885b6be40"}, {"url": "https://git.kernel.org/stable/c/b6baf0db357fb84f3f3cfd33383a00de71a5a1c3"}, {"url": "https://git.kernel.org/stable/c/23690064f235a88a00c04f2e49f36bfb54ae560d"}, {"url": "https://git.kernel.org/stable/c/6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622"}], "title": "xfs: fix another iunlink infinite loop bug in online fsck", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/xfs/scrub/agheader_repair.c", "fs/xfs/scrub/trace.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "24aec8c88539a382355761a9b924046885b6be40", "status": "affected", "version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "versionType": "git"}, {"lessThan": "b6baf0db357fb84f3f3cfd33383a00de71a5a1c3", "status": "affected", "version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "versionType": "git"}, {"lessThan": "23690064f235a88a00c04f2e49f36bfb54ae560d", "status": "affected", "version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "versionType": "git"}, {"lessThan": "6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622", "status": "affected", "version": "ab97f4b1c030750f2475bf4da8a9554d02206640", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/xfs/scrub/agheader_repair.c", "fs/xfs/scrub/trace.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"lessThan": "6.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.105", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.46", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix another iunlink infinite loop bug in online fsck\n\nxrep_iunlink_resolve_bucket is supposed to reconstruct as much of the\nincore prev and next unlinked list pointers based on what it finds on\ndisk and in memory before we move on to relinking the truly lost inodes\nback into the unlinked list. However, it's still vulnerable to infinite\nloops that come in via the next_unlinked pointers.\n\nFix this problem by remembering which inodes we've already seen and\nchecking new agino pointers against that. If a bit is already set,\neither this is a loop or the inode has nonzero link count. We'll deal\nwith the second case in a subsequent patch."}], "id": "CVE-2026-80532", "lastModified": "2026-08-26T15:17:07.270", "metrics": {}, "published": "2026-08-26T15:17:07.270", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/23690064f235a88a00c04f2e49f36bfb54ae560d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24aec8c88539a382355761a9b924046885b6be40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b6baf0db357fb84f3f3cfd33383a00de71a5a1c3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: xfs: fix another iunlink infinite loop bug in online fsck", "id": "2524489", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524489"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["A flaw was found in the XFS filesystem's online file system check (fsck) utility within the Linux kernel. The xrep_iunlink_resolve_bucket function, responsible for reconstructing unlinked inode lists, is vulnerable to an infinite loop. This can occur due to malformed next_unlinked pointers, potentially leading to a Denial of Service (DoS) where the system becomes unresponsive during an online filesystem check."], "name": "CVE-2026-80532", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80532\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80532\nhttps://lore.kernel.org/linux-cve-announce/2026082603-CVE-2026-80532-6860@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ab97f4b1c030750f2475bf4da8a9554d02206640,24aec8c88539a382355761a9b924046885b6be40)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ab97f4b1c030750f2475bf4da8a9554d02206640,b6baf0db357fb84f3f3cfd33383a00de71a5a1c3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ab97f4b1c030750f2475bf4da8a9554d02206640,23690064f235a88a00c04f2e49f36bfb54ae560d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ab97f4b1c030750f2475bf4da8a9554d02206640,6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.105,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.46,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.10,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-26T16:45:08.070910+00:00", "updated": "2026-08-27T01:45:04.529365+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-665", "CWE-835"]}