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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-27 13:58:53 +0200
committerGreg Kroah-Hartman <gregkh@google.com>2018-07-27 14:12:28 +0200
commitc4067f44efd01ef002d88d7c70c90373c1b358fe (patch)
treed486dc591d3cf7318d02c006e58d0237b8240bea /net/ipv4/tcp_input.c
parent14e0533779770031121dd695807c9f55525c61e9 (diff)
Fix backport of "tcp: detect malicious patterns in tcp_collapse_ofo_queue()"
Based on review from Eric Dumazet, my backport of commit 3d4bf93ac12003f9b8e1e2de37fe27983deebdcf to older kernels was a bit incorrect. This patch fixes this. Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index cc9874d7f223..d3b7172b9ee0 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4822,6 +4822,7 @@ static void tcp_collapse_ofo_queue(struct sock *sk)
/* Start new segment */
start = TCP_SKB_CB(skb)->seq;
end = TCP_SKB_CB(skb)->end_seq;
+ range_truesize = skb->truesize;
} else {
if (before(TCP_SKB_CB(skb)->seq, start))
start = TCP_SKB_CB(skb)->seq;