CVE-2020-13800 Denial of service in n/a
A guest OS user can cause a denial of service in QEMU via infinite recursion triggered by a crafted mm_index value in the ATI VGA emulation.
- 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-2020-13800?
CVE-2020-13800 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 4 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ati-vga in hw/display/ati.c in QEMU 4.2.0 allows guest OS users to trigger infinite recursion via a crafted mm_index value during an ati_mm_read or ati_mm_write call.
Weakness: CWE-674
Which versions are affected by CVE-2020-13800?
It affects 3 products.
Products include Canonical Ubuntu Linux, Opensuse Leap, Qemu Qemu.
How do I fix CVE-2020-13800?
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-2020-13800 being exploited?
There is no known exploitation of CVE-2020-13800 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-13800, GHSA-xhj5-rvcv-cccg, UBUNTU-CVE-2020-13800.