]> git.proxmox.com Git - pve-kernel-jessie.git/blobdiff - CVE-2017-6074-dccp-fix-freeing-skb-too-early-for-IPV6_RECVPKTINFO.patch
drop already applied patches
[pve-kernel-jessie.git] / CVE-2017-6074-dccp-fix-freeing-skb-too-early-for-IPV6_RECVPKTINFO.patch
diff --git a/CVE-2017-6074-dccp-fix-freeing-skb-too-early-for-IPV6_RECVPKTINFO.patch b/CVE-2017-6074-dccp-fix-freeing-skb-too-early-for-IPV6_RECVPKTINFO.patch
deleted file mode 100644 (file)
index 202aa59..0000000
+++ /dev/null
@@ -1,58 +0,0 @@
-From 4feb04ade2a559e0e76a0215d259c5673e5b1cbd Mon Sep 17 00:00:00 2001
-From: Andrey Konovalov <andreyknvl@google.com>
-Date: Thu, 16 Feb 2017 17:22:46 +0100
-Subject: [PATCH] dccp: fix freeing skb too early for IPV6_RECVPKTINFO
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-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>
-
-CVE-2017-6074
-BugLink: http://bugs.launchpad.net/bugs/1665935
-
-(cherry-picked from 5edabca9d4cff7f1f2b68f0bac55ef99d9798ba4 davem)
-Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
-
-Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
----
- 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 3bd14e8..dbe2573 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;
--- 
-2.1.4
-