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CVE-2025-21720 | Linux Kernel up to 6.6.75/6.12.12/6.13.1 Netlink Socket ip_forward null pointer dereference
A vulnerability has been found in Linux Kernel up to 6.6.75/6.12.12/6.13.1 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /proc/sys/net/ipv4/ip_forward of the component Netlink Socket Handler. The manipulation leads to null pointer dereference. This vulnerability is known as CVE-2025-21720. The attack needs to be done within the local network. There is no exploit available. It is recommended to upgrade the affected component.