Linux 4.9.13 contains the CVE-2017-6074.patch, removing

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

patches/CVE-2017-6074.patch

@@ -1,47 +0,0 @@
-From 5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4 Mon Sep 17 00:00:00 2001
-From: Andrey Konovalov <andreyknvl@google.com>
-Date: Thu, 16 Feb 2017 17:22:46 +0100
-Subject: dccp: fix freeing skb too early for IPV6_RECVPKTINFO
-
-In the current DCCP implementation an skb for a DCCP_PKT_REQUEST packet
-is forcibly freed via __kfree_skb in dccp_rcv_state_process if
-dccp_v6_conn_request successfully returns.
-
-However, if IPV6_RECVPKTINFO is set on a socket, the address of the skb
-is saved to ireq->pktopts and the ref count for skb is incremented in
-dccp_v6_conn_request, so skb is still in use. Nevertheless, it gets freed
-in dccp_rcv_state_process.
-
-Fix by calling consume_skb instead of doing goto discard and therefore
-calling __kfree_skb.
-
-Similar fixes for TCP:
-
-fb7e2399ec17f1004c0e0ccfd17439f8759ede01 [TCP]: skb is unexpectedly freed.
-0aea76d35c9651d55bbaf746e7914e5f9ae5a25d tcp: SYN packets are now
-simply consumed
-
-Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
-Acked-by: Eric Dumazet <edumazet@google.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- net/dccp/input.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/net/dccp/input.c b/net/dccp/input.c
-index ba34718..8fedc2d 100644
---- a/net/dccp/input.c
-+++ b/net/dccp/input.c
-@@ -606,7 +606,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
- 			if (inet_csk(sk)->icsk_af_ops->conn_request(sk,
- 								    skb) < 0)
- 				return 1;
--			goto discard;
-+			consume_skb(skb);
-+			return 0;
- 		}
- 		if (dh->dccph_type == DCCP_PKT_RESET)
- 			goto discard;
--- 
-cgit v0.12
-

scripts/extract

@@ -24,9 +24,11 @@ fi
 
 cp ${CONFIG}/kernel-config ${DIR}/.config
 
-pushd .
-cd ${DIR}
-patch -p1 < ${PATCHES}/*
-popd
+if [ -e "${PATCHES}" ]; then
+	pushd .
+	cd ${DIR}
+	patch -p1 < ${PATCHES}/*
+	popd
+fi
 
 tar zcvf ${DIST}/kernel/linux-${KERNEL_VERSION}-src.tgz ${DIR}