CVE-2022-32264 Denial of service in n/a

High 7.5 Published 6 Sep 2022 Updated 17 Jun 2025

Improper handling of TCP timestamp options in FreeBSD allows remote attackers to cause a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-32264?

CVE-2022-32264 is a high-severity denial of service vulnerability in Freebsd Freebsd, published on 6 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

sys/netinet/tcp_timer.h in FreeBSD before 7.0 contains a denial-of-service (DoS) vulnerability due to improper handling of TSopt on TCP connections. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Weakness: CWE-755

Which versions are affected by CVE-2022-32264?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2022-32264?

No fix has been published for CVE-2022-32264 yet. Limit exposure of the affected software until one is available.

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-2022-32264 being exploited?

There is no known exploitation of CVE-2022-32264 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-74rw-pw87-v75g.