CVE-2015-8551 Null dereference in n/a
Local guest administrators can crash the host OS via NULL pointer dereference in the Xen PCI backend driver when using specific Linux kernels and passed-through devices.
- 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-2015-8551?
CVE-2015-8551 is a medium-severity vulnerability in Debian Debian Linux, published on 13 Apr 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka "Linux pciback missing sanity checks."
Weakness: CWE-476
Which versions are affected by CVE-2015-8551?
It affects 8 products.
Products include Debian Debian Linux, Linux kernel, Opensuse Opensuse, Suse Linux Enterprise Desktop, Suse Linux Enterprise Real Time Extension, Suse Linux Enterprise Server and 2 more.
How do I fix CVE-2015-8551?
Apply the vendor's patch.
Is CVE-2015-8551 being exploited?
There is no known exploitation of CVE-2015-8551 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2015-8551, GHSA-xrr8-pr2x-q64f, UBUNTU-CVE-2015-8551.