Bug 2267937 (CVE-2021-47088)

Summary:	CVE-2021-47088 kernel: mm/damon/dbgfs: protect targets destructions with kdamond_lock
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, aubaker, 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 5.15.12, kernel 5.16	Doc Type:	If docs needed, set a value
Doc Text:		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:
Bug Blocks:	2268181

Description Zack Miele 2024-03-05 16:08:59 UTC

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

mm/damon/dbgfs: protect targets destructions with kdamond_lock

The Linux kernel CVE team has assigned CVE-2021-47088 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47088-269c@gregkh/T

Comment 4 Audra Mitchell 2024-03-12 20:30:17 UTC

Looks like we already have this fix in RHEL8 and RHEL9. Closing the triaging jiras accordingly...

$ kerneloscope downstream 34796417964b
ff6daba7c0d7 (in rhel-8.7, rhel-8.8, rhel-8.9, rhel-8.10) mm/damon/dbgfs: protect targets destructions with kdamond_lock
ad2b724628a1 (in rhel-9.1, rhel-9.2, rhel-9.3, rhel-9.4) mm/damon/dbgfs: protect targets destructions with kdamond_lock

Comment 5 Alex 2024-06-09 15:07:26 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47088 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags LOCK SIMPLEFIX RACE  ; 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.