CVE-2026-98432 | Linux Kernel up to 7.3-rc6 ipv4 tcp_v4_syn_recv_sock ireq_opt/inet_opt/optlen use after free

October 15, 2026 Yanac

A vulnerability, which was classified as very critical, has been found in Linux Kernel up to 7.3-rc6. Affected is the function tcp_v4_syn_recv_sock of the component ipv4. The manipulation of the argument ireq_opt/inet_opt/optlen leads to use after free.

This vulnerability is uniquely identified as CVE-2026-98432. The attack is possible to be carried out remotely. No exploit exists.

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