CVE-2024-26673 netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations

What is CVE-2024-26673?

CVE-2024-26673 is a high-severity vulnerability in Debian Debian Linux, published on 2 Apr 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: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations

- Disallow families other than NFPROTO_{IPV4,IPV6,INET}. - Disallow layer 4 protocol with no ports, since destination port is a mandatory attribute for this object.

Which versions are affected by CVE-2024-26673?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2024-26673?

Apply the vendor's patch.

Is CVE-2024-26673 being exploited?

There is no known exploitation of CVE-2024-26673 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-26673, DEBIAN-CVE-2024-26673, GHSA-v854-7g2j-4x32, UBUNTU-CVE-2024-26673.