From 4a1ff6e2bde56cdf176bd54d557b2e15e819f810 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Sun, 12 Mar 2006 20:34:53 -0800
Subject: [PATCH] [TCP]: tcp_highspeed: fix AIMD table out-of-bounds access
Covertiy #547
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/tcp_highspeed.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index 63cf7e5408479..e0e9d1383c7c7 100644
--- a/net/ipv4/tcp_highspeed.c
+++ b/net/ipv4/tcp_highspeed.c
@@ -125,7 +125,7 @@ static void hstcp_cong_avoid(struct sock *sk, u32 adk, u32 rtt,
/* Update AIMD parameters */
if (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd) {
while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd &&
- ca->ai < HSTCP_AIMD_MAX)
+ ca->ai < HSTCP_AIMD_MAX - 1)
ca->ai++;
} else if (tp->snd_cwnd < hstcp_aimd_vals[ca->ai].cwnd) {
while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd &&
--
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