CVE-2014-9066 Denial of service in n/a
Local guest users can crash the host system via a race condition in lock handling when many VCPUs are configured.
- 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-2014-9066?
CVE-2014-9066 is a medium-severity denial of service vulnerability in Opensuse Opensuse, published on 9 Dec 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service (write denial or NMI watchdog timeout and host crash) via a large number of read requests, a different vulnerability than CVE-2014-9065.
Weakness: CWE-17
Which versions are affected by CVE-2014-9066?
It affects 2 products.
Products include Opensuse Opensuse, Xen Xen.
How do I fix CVE-2014-9066?
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-2014-9066 being exploited?
There is no known exploitation of CVE-2014-9066 in the wild and no public exploit code.
Other vulnerabilities in Opensuse Opensuse
Sources
Also known as DEBIAN-CVE-2014-9066, GHSA-4f7c-f5r2-23hx, UBUNTU-CVE-2014-9066.