CVE-2018-20123 Denial of service in n/a
A memory leak in QEMU's pvrdma device initialization allows attackers to cause a denial of service through resource exhaustion.
- 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-2018-20123?
CVE-2018-20123 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 17 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
pvrdma_realize in hw/rdma/vmw/pvrdma_main.c in QEMU has a Memory leak after an initialisation error.
Weakness: CWE-772
Which versions are affected by CVE-2018-20123?
It affects 3 products.
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Qemu Qemu.
How do I fix CVE-2018-20123?
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-2018-20123 being exploited?
There is no known exploitation of CVE-2018-20123 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-20123, GHSA-67j6-97p5-8rwj.