In the Linux kernel before 5.16.15, there is a buffer overflow in ESP transformation in net/ipv4/esp4.c and net/ipv6/esp6.c via a large message. In some configurations, local users can gain privileges by overwriting kernel heap objects. CREATE(Triage):(User=admin) CVE-2022-27666 (https://nvd.nist.gov/vuln/detail/CVE-2022-27666)