CVE-2011-2901 Denial of service in n/a
Local 64-bit PV guest administrators can crash the host system via unspecified hypercalls due to an off-by-one error in the address validation macro.
- 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-2011-2901?
CVE-2011-2901 is a medium-severity denial of service vulnerability in Xen Xen, published on 1 Oct 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.
Weakness: CWE-399
Which versions are affected by CVE-2011-2901?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2011-2901?
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-2011-2901 being exploited?
There is no known exploitation of CVE-2011-2901 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as GHSA-596h-97jg-mfff.