CVE-2023-3106 Kernel: netlink socket crash (null pointer deref) in netlink_dump function

What is CVE-2023-3106?

CVE-2023-3106 is a medium-severity vulnerability in Fedoraproject Fedora, published on 12 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

Weakness: CWE-476

Which versions are affected by CVE-2023-3106?

It affects 2 products.

Products include Fedoraproject Fedora, Linux kernel.

How do I fix CVE-2023-3106?

Apply the vendor's patch.

Is CVE-2023-3106 being exploited?

There is no known exploitation of CVE-2023-3106 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2023-3106, GHSA-f28c-5rx3-m73f, UBUNTU-CVE-2023-3106.