Bug 2274620 (CVE-2021-47189)

Summary:	CVE-2021-47189 kernel: btrfs: fix memory ordering between normal and ordered work functions
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	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 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 memory ordering flaw was found in the btrfs file system code in the Linux kernel, which could lead to unpredictable behavior or security risks. The vulnerability is due to improper synchronization between normal and ordered work functions.	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:	2274637

Description Marco Benatto 2024-04-11 21:11:48 UTC

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

btrfs: fix memory ordering between normal and ordered work functions

The Linux kernel CVE team has assigned CVE-2021-47189 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041034-CVE-2021-47189-a3f4@gregkh/T

Comment 1 Alex 2024-06-09 12:51:25 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47189 is: 	SKIPCHECK	Skip, because not a security issue or not included. Check manually anyway.	YES	NONE	DANGER DISK SKIP 	NO	NO	guess (where first YES/NO value means if related sources built).