Home Home > GIT Browse > stable-xen
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorHerbert Xu <herbert@gondor.apana.org.au>2007-04-05 00:07:39 -0700
committerDavid S. Miller <davem@davemloft.net>2007-04-05 00:07:39 -0700
commit4c4d51a7316b164ba08af61aa0c124a88bc60450 (patch)
tree432e2d46513ddb61b0da9da14410b6888c947b70
parent60e5c166413f17d5ef00b4c1f398dbd44291309a (diff)
[IPSEC]: Reject packets within replay window but outside the bit mask
Up until this point we've accepted replay window settings greater than 32 but our bit mask can only accomodate 32 packets. Thus any packet with a sequence number within the window but outside the bit mask would be accepted. This patch causes those packets to be rejected instead. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/xfrm/xfrm_state.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 5c5f6dcab974..e3a0bcfa5df1 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1371,7 +1371,8 @@ int xfrm_replay_check(struct xfrm_state *x, __be32 net_seq)
return 0;
diff = x->replay.seq - seq;
- if (diff >= x->props.replay_window) {
+ if (diff >= min_t(unsigned int, x->props.replay_window,
+ sizeof(x->replay.bitmap) * 8)) {
x->stats.replay_window++;
return -EINVAL;
}