CVE-2014-6268 Denial of service in n/a

Medium 4.9 Published 12 Jan 2015 Updated 6 Aug 2024

Local guest users can crash the Xen host by triggering an uninitialized FIFO-based event channel control block during binding or moving events.

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-2014-6268?

CVE-2014-6268 is a medium-severity denial of service vulnerability in Xen Xen, published on 12 Jan 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The evtchn_fifo_set_pending function in Xen 4.4.x allows local guest users to cause a denial of service (host crash) via vectors involving an uninitialized FIFO-based event channel control block when (1) binding or (2) moving an event to a different VCPU.

Weakness: CWE-399

Which versions are affected by CVE-2014-6268?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2014-6268?

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-2014-6268 being exploited?

There is no known exploitation of CVE-2014-6268 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-6268, GHSA-pqpf-jcx3-x4v7, UBUNTU-CVE-2014-6268.