From ${URL}: net/ipv4/route.c in the Linux kernel 4.13-rc1 through 4.13-rc6 is too late to check for a NULL fi field when RTM_F_FIB_MATCH is set, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via crafted system calls. NOTE: this does not affect any stable release. CVE Details: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13686
Patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc3aae2bbac46dd894c89db5d5e98f7f0ef9e205
Seemingly only affected rc versions