Bug 2300299 (CVE-2024-41016)

Summary:	CVE-2024-41016 kernel: ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()
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:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.11-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the ocfs2_xattr_find_entry() function in the Linux kernel's Oracle Cluster File System version 2 (OCFS2). This issue arose due to inadequate bounds checking before a memcmp operation, particularly when handling "non-indexed" extended attributes (xattrs) that might request additional space.	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:
Bug Depends On:	2300873
Bug Blocks:

Description OSIDB Bzimport 2024-07-29 07:20:51 UTC

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

ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()

xattr in ocfs2 maybe 'non-indexed', which saved with additional space
requested.  It's better to check if the memory is out of bound before
memcmp, although this possibility mainly comes from crafted poisonous
images.

Comment 1 Mauro Matteo Cascella 2024-07-29 19:09:29 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2300873]