Bug 2266375 (CVE-2021-46925)

Summary:	CVE-2021-46925 kernel: net/smc: fix kernel panic caused by race of smc_sock
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
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, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sukulkar, tglozar, tyberry, vkumar, vsroka, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel affecting the net/smc Synchronous Message Channel subsystem. This vulnerability is caused by a race condition between the smc_cdc_tx_handler and smc_release functions and can cause kernel panics.	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:	2266377
Bug Blocks:	2266445

Description Mauro Matteo Cascella 2024-02-27 17:39:11 UTC

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

net/smc: fix kernel panic caused by race of smc_sock

The Linux kernel CVE team has assigned CVE-2021-46925 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022748-CVE-2021-46925-c422@gregkh/T/#u

Comment 4 Mauro Matteo Cascella 2024-02-27 17:41:37 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266377]

Comment 5 Justin M. Forbes 2024-02-27 18:28:22 UTC

This was fixed for Fedora with the 5.15.13 stable kernel updates.