tree 4dec735f76a2132c3e74d11d2f59cbbda7eeb6c9
parent 3a56af1fbc17ff453f6e90fb08ce0c0e6fd0b61b
author P J P <pjp@fedoraproject.org> 1442315449 +0530
committer Michael Roth <mdroth@linux.vnet.ibm.com> 1442873054 -0500

net: add checks to validate ring buffer pointers(CVE-2015-5279)

Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152)
bytes to process network packets. While receiving packets
via ne2000_receive() routine, a local 'index' variable
could exceed the ring buffer size, which could lead to a
memory buffer overflow. Added other checks at initialisation.

Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: P J P <pjp@fedoraproject.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 9bbdbc66e5765068dce76e9269dce4547afd8ad4)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>