CVE-2018-15746 Denial of service in n/a

Medium 5.5 Published 29 Aug 2018 Updated 5 Aug 2024

Local guest users can crash the guest system by exploiting mishandled seccomp policies in QEMU threads.

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-2018-15746?

CVE-2018-15746 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 29 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp policy for threads other than the main thread.

Which versions are affected by CVE-2018-15746?

It affects 1 product.

Products include Qemu Qemu.

How do I fix CVE-2018-15746?

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-2018-15746 being exploited?

There is no known exploitation of CVE-2018-15746 in the wild and no public exploit code.

All Qemu Qemu vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-15746, GHSA-rp3q-x36m-62mp, UBUNTU-CVE-2018-15746.