Alexander Drozdov dbd46ab412 packet: tpacket_snd(): fix signed/unsigned comparison ...

tpacket_fill_skb() can return a negative value (-errno) which
is stored in tp_len variable. In that case the following
condition will be (but shouldn't be) true:

tp_len > dev->mtu + dev->hard_header_len

as dev->mtu and dev->hard_header_len are both unsigned.

That may lead to just returning an incorrect EMSGSIZE errno
to the user.

Fixes: 52f1454f629fa ("packet: allow to transmit +4 byte in TX_RING slot for VLAN case")
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

2015-07-29 00:09:58 -07:00

..

af_packet.c

packet: tpacket_snd(): fix signed/unsigned comparison

2015-07-29 00:09:58 -07:00

diag.c

netlink: make nlmsg_end() and genlmsg_end() void

2015-01-18 01:03:45 -05:00

internal.h

packet: free packet_rollover after synchronize_net

2015-06-21 09:30:42 -07:00

Kconfig

packet: Diag core and basic socket info dumping

2012-08-14 16:56:33 -07:00

Makefile

packet: Diag core and basic socket info dumping

2012-08-14 16:56:33 -07:00