Bug 2282582 (CVE-2021-47235)

Summary:	CVE-2021-47235 kernel: net: ethernet: fix potential use-after-free in ec_bhf_remove
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, 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, 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 4.4.274, kernel 4.9.274, kernel 4.14.238, kernel 4.19.196, kernel 5.4.128, kernel 5.10.46, kernel 5.12.13, kernel 5.13	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free vulnerability has been identified in the Linux kernel's Ethernet driver, specifically within the ec_bhf_remove() function. This flaw occurs when the function attempts to utilize a pointer to private data after the associated network device object has already been deallocated. This leads to a use-after-free condition. Successful exploitation of this vulnerability could result in unpredictable system behavior or a kernel-level crash, impacting system availability.	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:	2282975

Description ybuenos 2024-05-22 15:26:09 UTC

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

net: ethernet: fix potential use-after-free in ec_bhf_remove

The Linux kernel CVE team has assigned CVE-2021-47235 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052140-CVE-2021-47235-1fb6@gregkh/T

Comment 1 Alex 2024-06-09 13:52:26 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47235 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).