[ovs-git] [openvswitch/ovs] a4c029: flow: Fix buffer overread for crafted IPv6 packets...
noreply at github.com
Tue Jul 10 04:43:52 UTC 2018
Author: Ben Pfaff <blp at ovn.org>
Date: 2018-07-09 (Mon, 09 Jul 2018)
flow: Fix buffer overread for crafted IPv6 packets.
The ipv6_sanity_check() function implemented a check for IPv6 payload
length wrong: ip6_plen is the payload length but this function checked
whether it was longer than the total length of IPv6 header plus payload.
This meant that a packet with a crafted ip6_plen could result in a buffer
overread of up to the length of an IPv6 header (40 bytes).
The kernel datapath flow extraction code does not obviously have a similar
Signed-off-by: Ben Pfaff <blp at ovn.org>
Acked-by: Darrell Ball <dlu998 at gmail.com>
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