CVE-2015-6654 Denial of service in n/a
Remote domains with memory mapping permissions can cause a denial of service in Xen by triggering excessive console messages.
- 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-2015-6654?
CVE-2015-6654 is a low-severity denial of service vulnerability in Xen Xen, published on 3 Sep 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The xenmem_add_to_physmap_one function in arch/arm/mm.c in Xen 4.5.x, 4.4.x, and earlier does not limit the number of printk console messages when reporting a failure to retrieve a reference on a foreign page, which allows remote domains to cause a denial of service by leveraging permissions to map the memory of a foreign guest.
Weakness: CWE-264
Which versions are affected by CVE-2015-6654?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2015-6654?
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-2015-6654 being exploited?
There is no known exploitation of CVE-2015-6654 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as DEBIAN-CVE-2015-6654, GHSA-5993-2g85-9fjv, UBUNTU-CVE-2015-6654.