xfs: fix another iunlink infinite loop bug in online fsck (CVE-2026-80532) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80532

xfs: fix another iunlink infinite loop bug in online fsck

Answer in brief

CVE-2026-80532 records a Unknown severity vulnerability in xfs: fix another iunlink infinite loop bug in online fsck. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Aug 26, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ab97f4b1c030750f2475bf4da8a9554d02206640 <24aec8c88539a382355761a9b924046885b6be40 \|\| >=ab97f4b1c030750f2475bf4da8a9554d02206640 <b6baf0db357fb84f3f3cfd33383a00de71a5a1c3 \|\| >=ab97f4b1c030750f2475bf4da8a9554d02206640 <23690064f235a88a00c04f2e49f36bfb54ae560d \|\| >=ab97f4b1c030750f2475bf4da8a9554d02206640 <6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622	24aec8c88539a382355761a9b924046885b6be40, b6baf0db357fb84f3f3cfd33383a00de71a5a1c3, 23690064f235a88a00c04f2e49f36bfb54ae560d, 6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622
Linux/Linuxgeneric	6.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 24aec8c88539a382355761a9b924046885b6be40 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 26, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: xfs: fix another iunlink infinite loop bug in online fsck xrep_iunlink_resolve_bucket is supposed to reconstruct as much of the incore prev and next unlinked list pointers based on what it finds on disk and in memory before we move on to relinking the truly lost inodes back into the unlinked list. However, it's still vulnerable to infinite loops that come in via the next_unlinked pointers. Fix this problem by remembering which inodes we've already seen and checking new agino pointers against that. If a bit is already set, either this is a loop or the inode has nonzero link count. We'll deal with the second case in a subsequent patch.

Quoted source text, attributed separately from HOL analysis.