Bug 2541357 (CVE-2026-98133)

Summary:	CVE-2026-98133 kernel: ntfs: leave HasEA flag untouched on setxattr failure
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's NTFS file system implementation. When an error occurs while setting an extended attribute (EA), the kernel prematurely clears the flag indicating that extended attributes are present. A local user can exploit this vulnerability by triggering a failed extended attribute update, causing existing on-disk extended attributes to become hidden and inaccessible until the file inode is evicted from memory.	Story Points:	---
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Last Closed:		Type:	---
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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 11:33:31 UTC

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

ntfs: leave HasEA flag untouched on setxattr failure

In ntfs_set_ea(), the exit path unconditionally updates the HasEA
flag based on ea_info_qsize. When an error occurs before
ea_info_qsize is updated, NInoClearHasEA() hides existing on-disk
EAs until the inode is evicted.

Only update the flag on success.

Comment 1 Keith Grant 2026-09-28 14:36:59 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98133.mbox