Bug 2281171 (CVE-2024-35832)

Summary:	CVE-2024-35832 kernel: bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.7.5, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the bcachefs filesystem in the Linux kernel. This issue occurs due to improper handling of memory deallocation in the bch2_fs_snapshots_exit function. The use of kvfree on snapshot data can lead to memory corruption or potential crashes. This problem arises when the filesystem does not correctly free resources associated with snapshots, causing instability.	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:	2281172
Bug Blocks:	2281793

Description Zack Miele 2024-05-17 23:01:49 UTC

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

bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit

The Linux kernel CVE team has assigned CVE-2024-35832 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051730-CVE-2024-35832-b2f8@gregkh/T

Comment 1 Zack Miele 2024-05-17 23:02:26 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281172]

Comment 2 Alex 2024-06-09 13:44:13 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35832 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).