CVE-2014-5149 Denial of service in n/a

Medium 4.7 Published 22 Aug 2014 Updated 6 Aug 2024

A local HVM guest can cause a denial of service by consuming vCPUs through non-preemptible MMU virtualization operations in Xen using shadow pagetables.

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-2014-5149?

CVE-2014-5149 is a medium-severity denial of service vulnerability in Opensuse Opensuse, published on 22 Aug 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Certain MMU virtualization operations in Xen 4.2.x through 4.4.x, when using shadow pagetables, are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5146.

Weakness: CWE-399

Which versions are affected by CVE-2014-5149?

It affects 2 products.

Products include Opensuse Opensuse, Xen Xen.

How do I fix CVE-2014-5149?

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-2014-5149 being exploited?

There is no known exploitation of CVE-2014-5149 in the wild and no public exploit code.

All Opensuse Opensuse vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-5149, GHSA-3jrv-3c97-g969.