Bug 2541233 (CVE-2026-97546)

Summary:	CVE-2026-97546 kernel: xfs: don't spin forever on zero-length dirents when salvaging them
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	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
Whiteboard:
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Doc Text:	A flaw was found in the Linux kernel's XFS file system. A local user could trigger this vulnerability by mounting or repairing a corrupted file system containing zero-length directory entries. When salvaging these malformed entries during directory repair operations, the kernel fails to advance and enters an infinite loop, leading to a Denial of Service (DoS).	Story Points:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-25 11:07:27 UTC

In the Linux kernel, the following vulnerability has been resolved:

xfs: don't spin forever on zero-length dirents when salvaging them

LOLLM noticed that xrep_dir_recover_data can spin forever if it
encounters an unused dirent that claims to have length zero.  Fix that,
and prevent the same thing from happening with a zero-length entry.

Comment 1 gkamathe 2026-09-28 22:35:03 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97546.mbox