Bug 2528604 (CVE-2026-80820) - CVE-2026-80820 kernel: xfs: don't livelock in scrub on a circular unlinked list
Summary: CVE-2026-80820 kernel: xfs: don't livelock in scrub on a circular unlinked list
Keywords:
Status: NEW
Alias: CVE-2026-80820
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-04 15:38 UTC by OSIDB Bzimport
Modified: 2026-10-20 13:18 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-04 15:38:32 UTC 
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.
Comment 1 gkamathe 2026-09-08 07:15:49 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80820.mbox
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