CVE-2015-0268 Denial of service in n/a

Medium 4.9 Published 16 Feb 2015 Updated 6 Aug 2024

Local guest users on ARM Xen hypervisors can crash the host by writing invalid values to the GICD.SGIR register.

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-2015-0268?

CVE-2015-0268 is a medium-severity denial of service vulnerability in Xen Xen, published on 16 Feb 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The vgic_v2_to_sgi function in arch/arm/vgic-v2.c in Xen 4.5.x, when running on ARM hardware with general interrupt controller (GIC) version 2, allows local guest users to cause a denial of service (host crash) by writing an invalid value to the GICD.SGIR register.

Weakness: CWE-20

Which versions are affected by CVE-2015-0268?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2015-0268?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-0268 being exploited?

There is no known exploitation of CVE-2015-0268 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as GHSA-67x7-673j-9cxp.