CVE-2015-7969 Denial of service in n/a
Local guest administrators can cause a denial of service via memory consumption by triggering multiple domain teardowns 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-2015-7969?
CVE-2015-7969 is a medium-severity denial of service vulnerability in Xen Xen, published on 30 Oct 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service (memory consumption) via a large number of "teardowns" of domains with the vcpu pointer array allocated using the (1) XEN_DOMCTL_max_vcpus hypercall or the xenoprofile state vcpu pointer array allocated using the (2) XENOPROF_get_buffer or (3) XENOPROF_set_passive hypercall.
Weakness: CWE-399
Which versions are affected by CVE-2015-7969?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2015-7969?
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-2015-7969 being exploited?
There is no known exploitation of CVE-2015-7969 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2015-7969, GHSA-fpcv-vm34-hph7, UBUNTU-CVE-2015-7969.