CVE-2026-63872

The vulnerability affects the Linux kernel, specifically in the ESP (Encapsulating Security Payload) implementation, where a failure during the conversion of socket buffer (skb) page fragments can lead to a reference leak of old page fragments. This can result in memory resource exhaustion, potentially leading to denial of service conditions. System administrators and developers managing Linux-based systems, particularly those utilizing ESP for network security, should prioritize applying the patch to mitigate this high-severity issue.