Bug 2282524 (CVE-2021-47275)

Summary:	CVE-2021-47275 kernel: bcache: avoid oversized read request in cache missing code path
Product:	[Other] Security Response	Reporter:	ybuenos
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, bmarzins, 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, mbenatto, 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 5.12.11, kernel 5.13	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel's bcache driver, where the cached_dev_cache_miss() function can create an oversized read request when the calculation for the size of data read from the backing device produces an excessively large value, leading to potential kernel crash.	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:	2282972

Description ybuenos 2024-05-22 13:59:40 UTC

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

bcache: avoid oversized read request in cache missing code path

The Linux kernel CVE team has assigned CVE-2021-47275 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052152-CVE-2021-47275-0e3d@gregkh/T

Comment 1 Alex 2024-06-09 14:26:14 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47275 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).