ASA-2018-00066 – Linux kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable()

The Linux kernel was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.