Bug 2267169 (CVE-2021-47063)

Summary: CVE-2021-47063 kernel: drm: bridge/panel: UAF while Cleanup connector on bridge detach
Product: [Other] Security Response Reporter: Avinash Hanwate <ahanwate>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: 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, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 5.10.37, kernel 5.11.21, kernel 5.12.4, kernel 5.13 Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel. This may lead to a crash.
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: 2267170    
Bug Blocks: 2267188    

Description Avinash Hanwate 2024-03-01 04:55:33 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm: bridge/panel: Cleanup connector on bridge detach

The Linux kernel CVE team has assigned CVE-2021-47063 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022953-CVE-2021-47063-2f50@gregkh/T/#u

Comment 1 Avinash Hanwate 2024-03-01 04:56:07 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2267170]

Comment 2 Justin M. Forbes 2024-03-01 21:10:06 UTC
This was fixed for Fedora with the 5.12.4 stable kernel updates.

Comment 4 Alex 2024-06-09 12:43:32 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47063 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown (where first YES/NO value means if related sources built).