Bug 1834829 (CVE-2020-12768)

Summary:	CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, airlied, bhu, blc, bmasney, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, ptalbert, qzhao, rt-maint, rvrbovsk, steved, 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 flaw was found in the Linux kernel. A memory leak in svm_cpu_init() is possible leading to a system crash. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-04 23:20:30 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:	1834831
Bug Blocks:	1834833

Description Guilherme de Almeida Suckevicz 2020-05-12 13:52:35 UTC

An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak.

Reference and upstream commit:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068

Comment 1 Guilherme de Almeida Suckevicz 2020-05-12 13:53:32 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1834831]

Comment 2 Justin M. Forbes 2020-05-12 19:44:13 UTC

This was fixed for Fedora with the 5.6 kernel rebases.

Comment 4 Product Security DevOps Team 2020-06-04 23:20:30 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-2020-12768