Bug 2541029 (CVE-2026-97553)

Summary: CVE-2026-97553 kernel: xfs: lock the healthmon when inserting unmount event
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's XFS file system. When unmounting a file system, the health monitoring subsystem fails to acquire the necessary lock before inserting an unmount event into the event list. A local user with permissions to unmount file systems could trigger this race condition, causing list corruption and a Denial of Service (DoS) through a system crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-25 10:44:37 UTC
In the Linux kernel, the following vulnerability has been resolved:

xfs: lock the healthmon when inserting unmount event

LOLLM complains that xfs_healthmon_unmount does an unlocked insert of
the unmount event into the health monitor's event list.  Fix that.