Bug 2267026 (CVE-2023-52483)

Summary:	CVE-2023-52483 kernel: mctp: perform route lookups under a RCU read-side lock
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
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, jforbes, 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 5.15.137, kernel 6.1.59, kernel 6.5.8, kernel 6.6	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free vulnerability was found in the Linux kernel, which affects the mctp component and is caused by route lookups that traverse the net's route list without the RCU read lock held. This issue can result in a use-after-free situation where the kfree() function is called on a route pointer that is still in use, given the potential for preemption during the route lookup.	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:	2267027
Bug Blocks:	2266913

Description Avinash Hanwate 2024-02-29 11:10:08 UTC

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

mctp: perform route lookups under a RCU read-side lock

The Linux kernel CVE team has assigned CVE-2023-52483 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022923-CVE-2023-52483-5b9d@gregkh/T/#u

Comment 1 Avinash Hanwate 2024-02-29 11:10:48 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2267027]

Comment 2 Justin M. Forbes 2024-02-29 17:28:01 UTC

This was fixed for Fedora with the 6.5.8 stable kernel updates.

Comment 3 Alex 2024-06-09 12:54:51 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52483 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown (where first YES/NO value means if related sources built).