Bug 2525397 (CVE-2026-80591)

Summary:	CVE-2026-80591 kernel: f2fs: fix listxattr handling of corrupted xattr entries
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:	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 `f2fs` file system within the Linux kernel. This vulnerability arises from inadequate validation of extended attribute (xattr) entries during the `f2fs_listxattr()` function's operation. A local attacker could potentially create a corrupted xattr entry, causing the system to attempt to read data from outside the valid xattr storage area. This could lead to unexpected system behavior or the disclosure of sensitive information.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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 2026-08-28 07:42:57 UTC

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

f2fs: fix listxattr handling of corrupted xattr entries

Validate the xattr entry before reading its fields in f2fs_listxattr().
Return -EFSCORRUPTED when the entry is outside the valid xattr storage
area instead of returning a successful partial result.

Comment 1 gkamathe 2026-08-31 05:41:06 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082827-CVE-2026-80591-9af6@gregkh/T