CVE-2016-7154 Use after free in n/a
Local guest administrators can crash the host or potentially execute code via a use-after-free in Xen's FIFO event channel code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7154?
CVE-2016-7154 is a medium-severity use after free vulnerability in Xen Xen, published on 21 Sep 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use-after-free vulnerability in the FIFO event channel code in Xen 4.4.x allows local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number.
Weakness: CWE-416
Which versions are affected by CVE-2016-7154?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2016-7154?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2016-7154 being exploited?
There is no known exploitation of CVE-2016-7154 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2016-7154, GHSA-6m92-fjpm-vf6h, UBUNTU-CVE-2016-7154.