Bug 2161999 (CVE-2022-44032)

Summary:	CVE-2022-44032 Kernel: Race between cmm_open() and cm4000_detach() result in UAF
Product:	[Other] Security Response	Reporter:	Rohit Keshri <rkeshri>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, bhu, chwhite, crwood, ddepaula, debarbos, dfreiber, dhoward, dvlasenk, ezulian, fhrbata, hkrzesin, jarod, jburrell, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, kyoshida, lgoncalv, lleshchi, lzampier, nmurray, ptalbert, qzhao, rogbas, rvrbovsk, scweaver, security-response-team, tyberry, vkumar, walters, williams
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 possible race condition was found in drivers/char/pcmcia/cm4000_cs.c between the cmm_open() and the cm4000_detach() functions if the user physically removes the PCMCIA device in the Linux kernel. This flaw may eventually result in a use-after-free (UAF) flaw.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-01-21 13:52:18 UTC	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:	2162005
Bug Blocks:	2139046

Description Rohit Keshri 2023-01-18 14:37:44 UTC

A race condition may occur in drivers/char/pcmcia/cm4000_cs.c between cmm_open() and cm4000_detach() if the user physically removes the pcmcia device in the Linux kernel, This flaw may eventually result in UAF.

Reference:
https://lore.kernel.org/lkml/20220919040701.GA302806@ubuntu/

Comment 1 Rohit Keshri 2023-01-18 14:48:58 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2162005]

Comment 4 Product Security DevOps Team 2023-01-21 13:52:14 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-44032

Comment 8 Justin M. Forbes 2023-09-25 16:47:35 UTC

This was fixed with the 6.4 kernel series which removed these outdated drivers.