Bug 2267929 (CVE-2021-47094)

Summary: CVE-2021-47094 kernel: KVM: x86/mmu: Don't advance iterator after restart due to yielding
Product: [Other] Security Response Reporter: Zack Miele <zmiele>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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 5.15.12, kernel 5.16 Doc Type: If docs needed, set a value
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2268181    

Description Zack Miele 2024-03-05 15:59:00 UTC 
In the Linux kernel, the following vulnerability has been resolved:

KVM: x86/mmu: Don&#39;t advance iterator after restart due to yielding

The Linux kernel CVE team has assigned CVE-2021-47094 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47094-8cc7@gregkh/T
Comment 4 Alex 2024-06-09 16:32:20 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47094 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags DANGER VIRT INIT WARNONLY LEAK UAF LOG  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.