CVE-2014-1950 Use after free in n/a

Medium 4.6 Published 14 Feb 2014 Updated 6 Aug 2024

Local attackers with management access can trigger a use-after-free in Xen to cause denial of service or potentially escalate privileges.

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-2014-1950?

CVE-2014-1950 is a medium-severity use after free vulnerability in Xen Xen, published on 14 Feb 2014. 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 xc_cpupool_getinfo function in Xen 4.1.x through 4.3.x, when using a multithreaded toolstack, does not properly handle a failure by the xc_cpumap_alloc function, which allows local users with access to management functions to cause a denial of service (heap corruption) and possibly gain privileges via unspecified vectors.

Weakness: CWE-399

Which versions are affected by CVE-2014-1950?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2014-1950?

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-2014-1950 being exploited?

There is no known exploitation of CVE-2014-1950 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-1950, GHSA-98mj-mwpf-cj8q.