Bug 2138818 (CVE-2022-41222)

Summary:	CVE-2022-41222 kernel: mm/mremap.c use-after-free vulnerability
Product:	[Other] Security Response	Reporter:	Alex <allarkin>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, arachman, bhu, brdeoliv, bskeggs, chwhite, crwood, ctoe, ddepaula, debarbos, dvlasenk, ezulian, hdegoede, hkrzesin, hpa, jarod, jarodwilson, jburrell, jfaracco, jferlan, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jpoimboe, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, kpatch-maint, kyoshida, lgoncalv, linville, lleshchi, llong, lveyde, lzampier, masami256, mchehab, michal.skrivanek, mperina, nmurray, ptalbert, qzhao, rhandlin, rvrbovsk, scweaver, steved, tyberry, vkumar, walters, williams, ycote
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 use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code in how a race condition happens between rmap walk and mremap. This flaw allows a local user to crash or potentially escalate their privileges on the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-16 20:37:05 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:	2140392, 2140394, 2140395, 2140938, 2140939, 2140942, 2140943, 2140944, 2140945, 2140946, 2140947, 2140948, 2140949, 2140950, 2140951, 2141241, 2141242, 2142755
Bug Blocks:	2128683

Description Alex 2022-10-31 11:00:14 UTC

A flaw use after free found in Linux Kernel mm/mremap memory address space accounting source code. If race condition happens between rmap walk and mremap, this can result in stale TLB entries.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2

Comment 2 Alex 2022-11-06 11:21:34 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2140392]

Comment 12 Justin M. Forbes 2022-11-08 15:08:51 UTC

This was fixed for Fedora with the 5.12.18 stable kernel updates.

Comment 19 errata-xmlrpc 2023-02-21 08:58:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:0854 https://access.redhat.com/errata/RHSA-2023:0854

Comment 20 errata-xmlrpc 2023-02-21 09:21:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:0832 https://access.redhat.com/errata/RHSA-2023:0832

Comment 21 errata-xmlrpc 2023-02-21 09:22:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:0839 https://access.redhat.com/errata/RHSA-2023:0839

Comment 22 errata-xmlrpc 2023-03-07 13:53:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2023:1130 https://access.redhat.com/errata/RHSA-2023:1130

Comment 23 errata-xmlrpc 2023-03-13 14:16:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2023:1192 https://access.redhat.com/errata/RHSA-2023:1192

Comment 28 Product Security DevOps Team 2023-05-16 20:37:01 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-2022-41222

Comment 29 errata-xmlrpc 2023-06-06 14:11:47 UTC

This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Via RHSA-2023:3491 https://access.redhat.com/errata/RHSA-2023:3491