CVE-2023-53781 | Linux Kernel up to 6.2.11 net_namespace.h tcp_write_timer_handler use after free

December 9, 2025 Yanac

A vulnerability marked as critical has been reported in Linux Kernel up to 6.2.11. This impacts the function tcp_write_timer_handler in the library /include/net/net_namespace.h. The manipulation leads to use after free.

This vulnerability is listed as CVE-2023-53781. The attack must be carried out from within the local network. There is no available exploit.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More