CVE-2014-5146 Denial of service in n/a
A local HVM guest can cause a denial of service by consuming vCPUs through non-preemptible MMU operations in Xen when Hardware Assisted Paging is enabled.
- 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-2014-5146?
CVE-2014-5146 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 before the xsa97-hap patch, when using Hardware Assisted Paging (HAP), 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-2014-5149.
Weakness: CWE-399
Which versions are affected by CVE-2014-5146?
It affects 2 products.
Products include Opensuse Opensuse, Xen Xen.
How do I fix CVE-2014-5146?
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-2014-5146 being exploited?
There is no known exploitation of CVE-2014-5146 in the wild and no public exploit code.
Other vulnerabilities in Opensuse Opensuse
Sources
Also known as DEBIAN-CVE-2014-5146, GHSA-f96q-c56j-h692.