CVE-2015-8550 Race condition in n/a
Local guest administrators can crash the host or gain privileges via a double fetch race condition in Xen PV backends.
- 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-2015-8550?
CVE-2015-8550 is a high-severity vulnerability in Xen Xen, published on 14 Apr 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
Weakness: CWE-284
Which versions are affected by CVE-2015-8550?
It affects 2 products.
Products include Novell Suse Linux Enterprise Real Time Extension, Xen Xen.
How do I fix CVE-2015-8550?
Apply the vendor's patch.
Is CVE-2015-8550 being exploited?
There is no known exploitation of CVE-2015-8550 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2015-8550, GHSA-cv84-8x9g-5qcr, UBUNTU-CVE-2015-8550.