Bug 2274634 (CVE-2021-47203)

Summary: CVE-2021-47203 kernel: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
Product: [Other] Security Response Reporter: Marco Benatto <mbenatto>
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, emilne, 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 4.4.293, kernel 4.9.291, kernel 4.14.256, kernel 4.19.218, kernel 5.4.162, kernel 5.10.82, kernel 5.15.5, kernel 5.16 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel while parsing the txq list in the lpfc_drain_txq() function. Due to improper handling of a local fail message string which is set when a job fails and is never unset for subsequent jobs, this issue can lead to list corruption as jobs may be added to both the txq and the completions list. This could result in system instability or inconsistencies.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2274637    

Description Marco Benatto 2024-04-11 21:31:55 UTC 
In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()

The Linux kernel CVE team has assigned CVE-2021-47203 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041037-CVE-2021-47203-ff72@gregkh/T
Comment 2 Alex 2024-06-09 15:27:22 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47203 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DANGER SIMPLEFIX  ; these flags parsed automatically based on patche 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.