Vulnerability 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.
CVSS Score
8.8
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | 3.4.0 |
| Citrix | Xenserver | 6.0 |
Related Weaknesses (CWE)
References
- http://support.citrix.com/article/CTX214954Vendor Advisory
- http://www.debian.org/security/2016/dsa-3633
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmRelease Notes
- http://www.securityfocus.com/bid/92131Third Party Advisory
- http://www.securitytracker.com/id/1036446Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-182.htmlMitigationPatchVendor Advisory
- http://xenbits.xen.org/xsa/xsa182-4.5.patchPatch
- http://xenbits.xen.org/xsa/xsa182-4.6.patchPatch
- http://xenbits.xen.org/xsa/xsa182-unstable.patchPatch
- https://security.gentoo.org/glsa/201611-09
- http://support.citrix.com/article/CTX214954Vendor Advisory
- http://www.debian.org/security/2016/dsa-3633
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmRelease Notes
- http://www.securityfocus.com/bid/92131Third Party Advisory
- http://www.securitytracker.com/id/1036446Third Party Advisory
FAQ
What is CVE-2016-6258?
CVE-2016-6258 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.
How severe is CVE-2016-6258?
CVE-2016-6258 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-6258?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Citrix Xenserver.