CVE-2024-39490

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: The issue is related to a memory leak in the Linux kernel, specifically in the seg6 input core() function. This function is responsible for adding the SRH into a packet and uses skb cow head() to ensure sufficient headroom in the sk buff for accommodating the link-layer header. If skb cow header() fails, seg6 input core() catches the error but does not release the sk buff, resulting in a memory leak. The problem was introduced in a specific commit and persists even after subsequent commits that refactored the seg6 input() code to deal with netfilter hooks. A proposed patch addresses the memory leak by requiring seg6 input core() to release the sk buff if skb cow head() fails.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.