Fixed upstream in:[1]

7.3 (2026-10-18)

7.2.10 (2026-10-11)

6.18.56 (2026-10-11)

6.12.113 (2026-10-15)

6.6.159 (2026-10-15)

6.1.190 (2026-10-15)

5.15.225 (2026-10-15)

[1] https://lore.kernel.org/all/?q=tcp_v4_reqsk_destructor -- check for "kfree_rcu" being used instead of "kfree" within "tcp_v4_reqsk_destructor" (net/ipv4/tcp_ipv4.c)