CVE-2024-41043 netfilter: nfnetlink_queue: drop bogus WARN_ON
A bogus WARN_ON in the Linux kernel netfilter module can be triggered by flushing rules during packet processing, potentially causing a denial of service.
- 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-2024-41043?
CVE-2024-41043 is a medium-severity denial of service vulnerability in Linux kernel, published on 29 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_queue: drop bogus WARN_ON
Happens when rules get flushed/deleted while packet is out, so remove this WARN_ON.
This WARN exists in one form or another since v4.14, no need to backport this to older releases, hence use a more recent fixes tag.
Weakness: CWE-617
Which versions are affected by CVE-2024-41043?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-41043?
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-2024-41043 being exploited?
There is no known exploitation of CVE-2024-41043 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-41043, DEBIAN-CVE-2024-41043, GHSA-mp2j-qw8v-w56r, UBUNTU-CVE-2024-41043.