From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 2 Oct 2013 21:27:20 +0000 (+0300)
Subject: net: heap overflow in __audit_sockaddr()
X-Git-Tag: v3.12-rc7~20^2~72
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1661bf364ae9c506bc8795fef70d1532931be1e8;p=pandora-kernel.git

net: heap overflow in __audit_sockaddr()

We need to cap ->msg_namelen or it leads to a buffer overflow when we
to the memcpy() in __audit_sockaddr().  It requires CAP_AUDIT_CONTROL to
exploit this bug.

The call tree is:
___sys_recvmsg()
  move_addr_to_user()
    audit_sockaddr()
      __audit_sockaddr()

Reported-by: Jüri Aedla <juri.aedla@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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