tree b82c724797d76d29143c6b267bd006f40466f9c3
parent 9e2dcf72023d1447f09c47d77c99b0c49659e5ce
author Tim Gardner <tim.gardner@canonical.com> 1266933321 +0100
committer Patrick McHardy <kaber@trash.net> 1266933321 +0100

netfilter: xt_recent: fix buffer overflow

e->index overflows e->stamps[] every ip_pkt_list_tot packets.

Consider the case when ip_pkt_list_tot==1; the first packet received is stored
in e->stamps[0] and e->index is initialized to 1. The next received packet
timestamp is then stored at e->stamps[1] in recent_entry_update(),
a buffer overflow because the maximum e->stamps[] index is 0.

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Cc: stable@kernel.org
Signed-off-by: Patrick McHardy <kaber@trash.net>