CVE-2015-4104 Denial of service in n/a
Local guest users can crash the host system by improperly accessing PCI MSI mask bits in the Xen hypervisor.
- 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-2015-4104?
CVE-2015-4104 is a high-severity denial of service vulnerability in Xen Xen, published on 3 Jun 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
Weakness: CWE-264
Which versions are affected by CVE-2015-4104?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2015-4104?
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-2015-4104 being exploited?
There is no known exploitation of CVE-2015-4104 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2015-4104, GHSA-mcww-78xg-3cx3, UBUNTU-CVE-2015-4104.