tree 2ce62724a9931016cbbdb1bb94bc140012524c71
parent 196896d4bb297e3ff24e62b2bfc22bbed7a28431
author Dan Carpenter <dan.carpenter@oracle.com> 1380749240 +0300
committer David S. Miller <davem@davemloft.net> 1380830714 -0400

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>