CVE-2015-4163 Null dereference in n/a

Medium 4.9 Published 15 Jun 2015 Updated 6 Aug 2024

Local guest domains can cause a denial of service in Xen hypervisor via a null pointer dereference in grant table operations.

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-2015-4163?

CVE-2015-4163 is a medium-severity vulnerability in Xen Xen, published on 15 Jun 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

GNTTABOP_swap_grant_ref in Xen 4.2 through 4.5 does not check the grant table operation version, which allows local guest domains to cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version.

Which versions are affected by CVE-2015-4163?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2015-4163?

Apply the vendor's patch.

Is CVE-2015-4163 being exploited?

There is no known exploitation of CVE-2015-4163 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-4163, GHSA-586c-2349-hf65, UBUNTU-CVE-2015-4163.