netdev - [PATCH net 0/2] limit sk_filter trim to payload

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Message-Id: <1468361937-102786-1-git-send-email-willemdebruijn.kernel@gmail.com>
Date:	Tue, 12 Jul 2016 18:18:55 -0400
From:	Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:	netdev@...r.kernel.org
Cc:	alexei.starovoitov@...il.com, daniel@...earbox.net,
	davem@...emloft.net, hannes@...essinduktion.org,
	eric.dumazet@...il.com, Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net 0/2] limit sk_filter trim to payload

From: Willem de Bruijn <willemb@...gle.com>

Sockets can apply a filter to incoming packets to drop or trim them.
Fix two codepaths that call skb_pull/__skb_pull after sk_filter
without checking for packet length.

Reading beyond skb->tail after trimming happens in more codepaths, but
safety of reading in the linear segment is based on minimum allocation
size (MAX_HEADER, GRO_MAX_HEAD, ..).

Willem de Bruijn (2):
  rose: limit sk_filter trim to payload
  dccp: limit sk_filter trim to payload

 include/linux/filter.h |  6 +++++-
 include/net/sock.h     |  8 +++++++-
 net/core/filter.c      | 10 +++++-----
 net/core/sock.c        |  7 ++++---
 net/dccp/ipv4.c        |  2 +-
 net/dccp/ipv6.c        |  2 +-
 net/rose/rose_in.c     |  3 ++-
 7 files changed, 25 insertions(+), 13 deletions(-)

-- 
2.8.0.rc3.226.g39d4020