Bug 2267936 (CVE-2021-47089)

Summary:	CVE-2021-47089 kernel: kfence: fix memory leak when cat kfence objects
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, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---	Flags:	aubaker: needinfo? (zmiele)
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 16:07:43 UTC

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

kfence: fix memory leak when cat kfence objects

The Linux kernel CVE team has assigned CVE-2021-47089 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47089-bc5a@gregkh/T

Comment 2 Audra Mitchell 2024-03-12 20:12:45 UTC

Hey Zack-
Looks to me we already have the fix for this issue in RHEL 9:

$ kerneloscope  downstream 0129ab1f268b
0a838c65d871 (in rhel-9.1, rhel-9.2, rhel-9.3, rhel-9.4) kfence: fix memory leak when cat kfence objects

I'm going to go ahead and close the jiras for this issue. Let me know if you have any questions.