commit 0aa8c13eb512823bc4d60397d666a6b6260bb965 upstream. We lack a saddr check for ::1. This causes security issues e.g. with acls permitting connections from ::1 because of assumption that these originate from local machine.
Assuming a source address of ::1 is local seems reasonable. RFC4291 doesn't allow such a source address either, so drop such packets. As IPv6 is getting faster pace, this patch should be included in older kernels, for instance, 3.10 (RHEL7 family). It could be solved with netfilter, but why do not apply this trivial patch to work as expected? -- Donatas
