xfs: don't livelock in scrub on a circular unlinked list (CVE-2026-80820) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80820

xfs: don't livelock in scrub on a circular unlinked list

Answer in brief

CVE-2026-80820 records a Unknown severity vulnerability in xfs: don't livelock in scrub on a circular unlinked list. 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 Sep 4, 2026Updated Sep 4, 2026Source checked Sep 4, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 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	>=a12890aebb895951720ff884eab1c99a30645b29 <599453f83458b57995290a1d31200c263e2c2691 \|\| >=a12890aebb895951720ff884eab1c99a30645b29 <159d162fe80bd56573cafde5801bd5a90a3dd1ac \|\| >=a12890aebb895951720ff884eab1c99a30645b29 <56407a61a8bb85b884de802d39635abdb0ea7408 \|\| >=a12890aebb895951720ff884eab1c99a30645b29 <527eaaefddb6ec5c83a06c9a1559960dd6361753	599453f83458b57995290a1d31200c263e2c2691, 159d162fe80bd56573cafde5801bd5a90a3dd1ac, 56407a61a8bb85b884de802d39635abdb0ea7408, 527eaaefddb6ec5c83a06c9a1559960dd6361753
Linux/Linuxgeneric	4.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 599453f83458b57995290a1d31200c263e2c2691 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: xfs: don't livelock in scrub on a circular unlinked list LOLLM points out that online fsck can livelock if an unlinked inode list contains a loop. Use a bitmap to detect cycles.

Quoted source text, attributed separately from HOL analysis.