Bug 2524453 (CVE-2026-80538)

Summary:	CVE-2026-80538 kernel: xfs: propagate errors from xfs_rtginode_load
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the XFS filesystem within the Linux kernel. The `xfs_rtginode_ensure()` function incorrectly handles errors returned by `xfs_rtginode_load()`, treating I/O, allocation, or corruption errors as successful operations. This oversight can result in the realtime group inode remaining unset, causing the `growfs` utility to proceed with an incomplete or corrupted inode. The primary consequence is potential data corruption or system instability during filesystem operations.	Story Points:	---
Clone Of:		Environment:
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Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-08-26 14:56:27 UTC

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

xfs: propagate errors from xfs_rtginode_load

xfs_rtginode_ensure() treats every xfs_rtginode_load() error other than
-ENOENT as success.  This can leave the realtime group inode unset after an
I/O, allocation, or corruption error.  Growfs then continues as though the
inode had been loaded.

Only -ENOENT means that the inode needs to be created.  Return all other
errors to the growfs caller.

Comment 1 Mauro Matteo Cascella 2026-08-26 16:37:40 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082605-CVE-2026-80538-30fb@gregkh/T