CVE-2024-42154 tcp_metrics: validate source addr length
A missing length validation in the Linux kernel TCP metrics handler can lead to a null pointer dereference and system crash.
- 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-2024-42154?
CVE-2024-42154 is a medium-severity vulnerability in Linux kernel, published on 30 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:
tcp_metrics: validate source addr length
I don't see anything checking that TCP_METRICS_ATTR_SADDR_IPV4 is at least 4 bytes long, and the policy doesn't have an entry for this attribute at all (neither does it for IPv6 but v6 is manually validated).
Weakness: CWE-754
Which versions are affected by CVE-2024-42154?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42154?
Apply the vendor's patch.
Is CVE-2024-42154 being exploited?
There is no known exploitation of CVE-2024-42154 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-47522, AZL-47598, BELL-CVE-2024-42154, DEBIAN-CVE-2024-42154, GHSA-q75j-p4r8-37x7, UBUNTU-CVE-2024-42154.