use-after-free flaw was found in the way the Linux kernel’s key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system. The vulnerability has existed since 2012. Here is a link to the full exploit which runs on kernel 3.18 64-bit, following is the output of running the full exploit which takes about 30 minutes to run on Intel Core i7-5500 CPU
github.com/PerceptionPointTeam