CVE-2018-17155

In FreeBSD before 11.2-STABLEr338983, 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLEr338984, and 10.4-RELEASE-p13, due to insufficient initialization of memory copied to userland in the getcontext and swapcontext system calls, small amounts of kernel memory may be disclosed to userland processes...