tree e3d0a39967c24055f31a11de2682b37119dd80c8
parent 10452124bac39411e92fc8910dd418648bbb78ac
author Andrey Konovalov <andreyknvl@google.com> 1490796682 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1493825795 -0700

net/packet: fix overflow in check for tp_reserve

[ Upstream commit bcc5364bdcfe131e6379363f089e7b4108d35b70 ]

When calculating po->tp_hdrlen + po->tp_reserve the result can overflow.

Fix by checking that tp_reserve <= INT_MAX on assign.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>