CVE-2014-1642 Use after free in n/a
Local guest administrators can trigger memory corruption in Xen hypervisor via device passthrough, leading to denial of service or arbitrary code execution.
- 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-2014-1642?
CVE-2014-1642 is a medium-severity use after free vulnerability in Xen Xen, published on 26 Jan 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and configured to support a large number of CPUs, frees certain memory that may still be intended for use, which allows local guest administrators to cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code via vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free.
Weakness: CWE-399
Which versions are affected by CVE-2014-1642?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2014-1642?
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-2014-1642 being exploited?
There is no known exploitation of CVE-2014-1642 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2014-1642, GHSA-gjr7-r3wr-cjpp.