3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jan Engelhardt <jeng...@inai.de>
commit 82e6bfe2fbc4d48852114c4f979137cd5bf1d1a8 upstream.
Commit v2.6.19-rc1~1272^2~41 tells us that r->cost != 0 can happen when
a running state is saved to userspace and then reinstated from there.
Make sure that private xt_limit area is initialized with correct values.
Otherwise, random matchings due to use of uninitialized memory.
Signed-off-by: Jan Engelhardt <jeng...@inai.de>
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
Acked-by: David Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
net/netfilter/xt_limit.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/net/netfilter/xt_limit.c
+++ b/net/netfilter/xt_limit.c
@@ -117,11 +117,11 @@ static int limit_mt_check(const struct x
/* For SMP, we only want to use one set of state. */
r->master = priv;
+ /* User avg in seconds * XT_LIMIT_SCALE: convert to jiffies *
+ 128. */
+ priv->prev = jiffies;
+ priv->credit = user2credits(r->avg * r->burst); /* Credits full. */
if (r->cost == 0) {
- /* User avg in seconds * XT_LIMIT_SCALE: convert to jiffies *
- 128. */
- priv->prev = jiffies;
- priv->credit = user2credits(r->avg * r->burst); /* Credits
full. */
r->credit_cap = priv->credit; /* Credits full. */
r->cost = user2credits(r->avg);
}
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