CVE-2018-17154 Null dereference in FreeBSD

Medium 5.5 Published 28 Sep 2018 Updated 16 Sep 2024

Unprivileged local users can cause a denial of service via a NULL pointer dereference in the freebsd4_getfsstat system call.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-17154?

CVE-2018-17154 is a medium-severity vulnerability in Freebsd Freebsd, published on 28 Sep 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In FreeBSD before 11.2-STABLE(r338987), 11.2-RELEASE-p4, and 11.1-RELEASE-p15, due to insufficient memory checking in the freebsd4_getfsstat system call, a NULL pointer dereference can occur. Unprivileged authenticated local users may be able to cause a denial of service.

Weakness: CWE-476

Which versions are affected by CVE-2018-17154?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2018-17154?

No fix has been published for CVE-2018-17154 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-17154 being exploited?

There is no known exploitation of CVE-2018-17154 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-g38r-jrv6-p75p.