CVE-2016-6258 Privilege escalation in n/a
Local 32-bit PV guest administrators can gain host OS privileges by exploiting fast-paths in the Xen hypervisor's pagetable code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-6258?
CVE-2016-6258 is a high-severity vulnerability in Citrix Xenserver, published on 2 Aug 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2016-6258?
It affects 2 products.
Products include Citrix Xenserver, Xen Xen.
How do I fix CVE-2016-6258?
Apply the vendor's patch.
Is CVE-2016-6258 being exploited?
There is no known exploitation of CVE-2016-6258 in the wild and no public exploit code.
Other vulnerabilities in Citrix Xenserver
Sources
Also known as ALPINE-CVE-2016-6258, DEBIAN-CVE-2016-6258, GHSA-gh95-4f96-964p, UBUNTU-CVE-2016-6258.