Bug 2151317 (CVE-2022-45869)

Summary:	CVE-2022-45869 kernel: KVM: x86/mmu: race condition in direct_page_fault()
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, bhu, chwhite, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, lgoncalv, lleshchi, lzampier, mcascell, nmurray, pbonzini, ptalbert, qzhao, rogbas, rvrbovsk, scweaver, swood, tyberry, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.1-rc7	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel in the KVM. A race condition in direct_page_fault allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualization and the TDP MMU are enabled.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-08-01 16:09:16 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:	2179929, 2179930, 2179931, 2179932, 2151318, 2213165, 2215365
Bug Blocks:	2149549

Description Guilherme de Almeida Suckevicz 2022-12-06 17:42:38 UTC

A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the TDP MMU are enabled.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15

Comment 1 Guilherme de Almeida Suckevicz 2022-12-06 17:43:02 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2151318]

Comment 2 Justin M. Forbes 2022-12-08 15:59:00 UTC

This was fixed for Fedora with the 6.0.11 stable kernel updates.

Comment 15 errata-xmlrpc 2023-08-01 08:59:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4378 https://access.redhat.com/errata/RHSA-2023:4378

Comment 16 errata-xmlrpc 2023-08-01 09:17:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4377 https://access.redhat.com/errata/RHSA-2023:4377

Comment 17 Product Security DevOps Team 2023-08-01 16:09:13 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-2022-45869