CVE-2012-6031 Denial of service in n/a
Local guest OS users can cause a host crash and CPU hang in Xen via a spinlock issue in Transcendent Memory.
- 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-2012-6031?
CVE-2012-6031 is a medium-severity denial of service vulnerability in Xen Xen, published on 23 Nov 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The do_tmem_get function in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 allow local guest OS users to cause a denial of service (CPU hang and host crash) via unspecified vectors related to a spinlock being held in the "bad_copy error path." NOTE: this issue was originally published as part of CVE-2012-3497, which was too general; CVE-2012-3497 has been SPLIT into this ID and others.
Weakness: CWE-20
Which versions are affected by CVE-2012-6031?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2012-6031?
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-2012-6031 being exploited?
There is no known exploitation of CVE-2012-6031 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2012-6031, GHSA-jvrg-jfpg-gqx8.