CVE-2016-9816 Denial of service in n/a
Local ARM guest users can crash the host system via asynchronous aborts at EL2, requiring patches for Xen hypervisor deployments.
- 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-2016-9816?
CVE-2016-9816 is a medium-severity denial of service vulnerability in Xen Xen, published on 27 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen through 4.7.x allows local ARM guest OS users to cause a denial of service (host crash) via vectors involving an asynchronous abort while at EL2.
Weakness: CWE-284
Which versions are affected by CVE-2016-9816?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2016-9816?
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-2016-9816 being exploited?
There is no known exploitation of CVE-2016-9816 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2016-9816, DEBIAN-CVE-2016-9816, GHSA-3mch-7p5f-mw9j, UBUNTU-CVE-2016-9816.