The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets, a different vulnerability than CVE-2012-2663.
Linux Kernel 6.x/5.15 LTS
DDoS
CVE-2012-6638
NVD
Refer to CVE-2012-6638 NVD advisory