CVE-2016-6258

Description

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory citrix.com Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html release notes
http://xenbits.xen.org/xsa/advisory-182.html patch vendor advisory mitigation
http://xenbits.xen.org/xsa/xsa182-4.6.patch patch
http://support.citrix.com/article/CTX214954 vendor advisory
https://security.gentoo.org/glsa/201611-09 vendor advisory
http://xenbits.xen.org/xsa/xsa182-unstable.patch patch
http://xenbits.xen.org/xsa/xsa182-4.5.patch patch
http://www.debian.org/security/2016/dsa-3633 vendor advisory
http://www.securitytracker.com/id/1036446 vdb entry third party advisory
http://www.securityfocus.com/bid/92131 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-6258?
CVE-2016-6258 has been scored as a high severity vulnerability.
How to fix CVE-2016-6258?
To fix CVE-2016-6258, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6258 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6258 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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