netdev - x25: Fix multiple buffer overruns/overreads

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Message-Id: <1318653905-13716-1-git-send-email-mattjd@gmail.com>
Date:	Sat, 15 Oct 2011 00:45:02 -0400
From:	Matthew Daley <mattjd@...il.com>
To:	netdev@...r.kernel.org
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Andrew Hendry <andrew.hendry@...il.com>
Subject: x25: Fix multiple buffer overruns/overreads

This patchset fixes several buffer overruns/overreads in the X.25
packet layer. The first patch fixes a particularly nasty remote-triggerable
buffer overflow, while the rest fix skb overreads on undersized/fragmented
skbs.

Matthew Daley (3):
      x25: Validate incoming call user data lengths
      x25: Handle undersized/fragmented skbs
      x25: Prevent skb overreads when checking call user data

 net/x25/af_x25.c         |   40 ++++++++++++++++++++++++++++++++--------
 net/x25/x25_dev.c        |    6 ++++++
 net/x25/x25_facilities.c |   10 ++++++----
 net/x25/x25_in.c         |   43 ++++++++++++++++++++++++++++++++++++++-----
 net/x25/x25_link.c       |    3 +++
 net/x25/x25_subr.c       |   14 +++++++++++++-
 6 files changed, 98 insertions(+), 18 deletions(-)
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