CVE-2015-8615 Denial of service in n/a
Local HVM guest users can cause a denial of service by triggering excessive console logging through frequent callback method changes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-8615?
CVE-2015-8615 is a medium-severity denial of service vulnerability in Xen Xen, published on 8 Jan 2016. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The hvm_set_callback_via function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method (HVM_PARAM_CALLBACK_IRQ).
Weakness: CWE-254
Which versions are affected by CVE-2015-8615?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2015-8615?
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-2015-8615 being exploited?
There is no known exploitation of CVE-2015-8615 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2015-8615, GHSA-5p4h-mjwj-j325.