CVE-2021-22555 is a 15 years old heap out-of-bounds write vulnerability in Linux Netfilter that is powerful enough to bypass all modern security mitigations and achieve kernel code execution. It was used to break the kubernetes pod isolation of the kCTF cluster. https://google.github.io/security-research/pocs/linux/cve-2021-22555/writeup.html warm regards Saifi.
