Advisory Details

This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the nft_exthdr_tcp_eval function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

• 2023-09-05 - Vulnerability reported to vendor
• 2024-03-28 - Coordinated public release of advisory
• 2024-07-01 - Advisory Updated