Bug 2300422 (CVE-2024-41049)

Summary:	CVE-2024-41049 kernel: filelock: fix potential use-after-free in posix_lock_inode
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 5.4.280, kernel 5.10.222, kernel 5.15.163, kernel 6.1.100, kernel 6.6.41, kernel 6.9.10, kernel 6.10	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free vulnerability was found in the Linux kernel in trace_posix_lock_inode(). This issue occurred when the request pointer was changed to point to a lock entry added to the inode's list. Before the tracepoint could fire, another task raced in and freed the lock.	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:	2301579
Bug Blocks:

Description OSIDB Bzimport 2024-07-29 15:40:15 UTC

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

filelock: fix potential use-after-free in posix_lock_inode

Light Hsieh reported a KASAN UAF warning in trace_posix_lock_inode().
The request pointer had been changed earlier to point to a lock entry
that was added to the inode's list. However, before the tracepoint could
fire, another task raced in and freed that lock.

Fix this by moving the tracepoint inside the spinlock, which should
ensure that this doesn't happen.

Comment 1 Mauro Matteo Cascella 2024-07-30 10:19:15 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072927-CVE-2024-41049-bf28@gregkh/T

Comment 2 Mauro Matteo Cascella 2024-07-30 10:19:36 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301579]

Comment 6 errata-xmlrpc 2024-10-30 00:13:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:8614 https://access.redhat.com/errata/RHSA-2024:8614

Comment 7 errata-xmlrpc 2024-10-30 00:32:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:8613 https://access.redhat.com/errata/RHSA-2024:8613

Comment 8 errata-xmlrpc 2024-11-12 09:37:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315

Comment 9 errata-xmlrpc 2024-12-11 01:19:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2024:10942 https://access.redhat.com/errata/RHSA-2024:10942