A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 CREATE(Triage):(User=admin) CVE-2021-22600 (https://nvd.nist.gov/vuln/detail/CVE-2021-22600)
