Bug 2281771 (CVE-2024-35921)

Summary: CVE-2024-35921 kernel: media: mediatek: vcodec: Fix oops when HEVC init fails
Product: [Other] Security Response Reporter: Robb Gatica <rgatica>
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, 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 6.6.27, kernel 6.8.6, kernel 6.9 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's MediaTek vdec_hevc_req_multi_if.c driver in the vdec_hevc_slice_init() function, where a lack of proper checking can lead to a use-after-free scenario. This issue occurs when the stateless HEVC decoder saves the instance pointer in the context without checking whether the pointer was freed in case of a failure in the function vpu_dec_deinit(), possibly leading to memory corruption or causing system instability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2281772    
Bug Blocks: 2282024    

Description Robb Gatica 2024-05-20 13:37:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: mediatek: vcodec: Fix oops when HEVC init fails

The Linux kernel CVE team has assigned CVE-2024-35921 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051913-CVE-2024-35921-ec49@gregkh/T
Comment 1 Robb Gatica 2024-05-20 13:38:19 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281772]
Comment 2 Alex 2024-06-09 13:53:52 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35921 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).