Bug 1211903 (CVE-2023-34255)

Summary:	VUL-0: CVE-2023-34255: kernel: use-after-free in xfs_btree_lookup_get_block in fs/xfs/libxfs/xfs_btree.c
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Gabriele Sonnu <gabriele.sonnu>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED DUPLICATE	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P5 - None	CC:	ailiopoulos, security-team
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/368047/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Gabriele Sonnu 2023-06-01 09:32:41 UTC

CVE-2023-34255

An issue was discovered in the Linux kernel through 6.3.5. There is a
use-after-free in xfs_btree_lookup_get_block in fs/xfs/libxfs/xfs_btree.c
because fs/xfs/xfs_buf_item_recover.c does not perform buffer content
verification when log replay is skipped.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-34255
https://www.cve.org/CVERecord?id=CVE-2023-34255
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22ed903eee23a5b174e240f1cdfa9acf393a5210
https://syzkaller.appspot.com/bug?extid=7e9494b8b399902e994e

Comment 1 Gabriele Sonnu 2023-06-01 09:48:22 UTC

This looks like a duplicate of bug 1210498

*** This bug has been marked as a duplicate of bug 1210498 ***

Comment 2 Anthony Iliopoulos 2023-06-01 10:01:09 UTC

This has already been handled in the past via bsc#1210498, marked as CVE-2023-2124.

No idea why this has a new CVE number assigned to it now, the commit-id of the fix is identical, and it has already been backported to all our affected branches [1].
 
We are missing the fix for ALP-current though, since this was never submitted for stable inclusion.

[1] https://bugzilla.suse.com/show_bug.cgi?id=1210498#c7