From b8c203b2d2fc961bafd53b41d5396bbcdec55998 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 16 Sep 2014 10:08:49 +0200 Subject: xfrm: Generate queueing routes only from route lookup functions Currently we genarate a queueing route if we have matching policies but can not resolve the states and the sysctl xfrm_larval_drop is disabled. Here we assume that dst_output() is called to kill the queued packets. Unfortunately this assumption is not true in all cases, so it is possible that these packets leave the system unwanted. We fix this by generating queueing routes only from the route lookup functions, here we can guarantee a call to dst_output() afterwards. Fixes: a0073fe18e71 ("xfrm: Add a state resolution packet queue") Reported-by: Konstantinos Kolelis Signed-off-by: Steffen Klassert --- include/net/dst.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/dst.h') diff --git a/include/net/dst.h b/include/net/dst.h index fa11c904d219..a8ae4e760778 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -480,6 +480,7 @@ void dst_init(void); /* Flags for xfrm_lookup flags argument. */ enum { XFRM_LOOKUP_ICMP = 1 << 0, + XFRM_LOOKUP_QUEUE = 1 << 1, }; struct flowi; -- cgit v1.2.3