Bug 1059448 (CVE-2017-12168)

Summary:	VUL-0: CVE-2017-12168: kernel: kvm: ARM64: assert failure when accessing PMCCNTR register
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Alexander Bergmann <abergmann>
Component:	Incidents	Assignee:	Michal Marek <mmarek>
Status:	RESOLVED UPSTREAM	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P5 - None	CC:	abergmann, smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/192162/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Alexander Bergmann 2017-09-20 06:24:08 UTC

rh#1492984

Linux kernel built for the ARM64(CONFIG_ARM64) architecture platform with
KVM virtualisation(CONFIG_KVM) support is vulnerable to an assert failure
issue. It could occur while accessing Performance Monitors Cycle Count
Register(PMCCNTR).

A privileged guest user/process could use this flaw to crash the host
kernel resulting in DoS.

Upstream patch:
https://git.kernel.org/linus/9e3f7a29694049edd728e2400ab57ad7553e5aa9

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1492984
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-12168
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12168

Comment 1 Alexander Bergmann 2017-09-20 06:25:05 UTC

This issue doesn't affect SLE or openSUSE.