diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-06-06 22:42:06 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-07-13 05:29:27 +0200 |
| commit | cc2c6564492b2a5f570d08d127c1496cc185a5f5 (patch) | |
| tree | 2c18614e6bc14a5ad26a1505e52b2acee2689c6b /include | |
| parent | 5eabe872301b2754122ce37fc4d1adfafbc94182 (diff) | |
af_packet: prevent information leak
[ Upstream commit 13fcb7bd322164c67926ffe272846d4860196dc6 ]
In 2.6.27, commit 393e52e33c6c2 (packet: deliver VLAN TCI to userspace)
added a small information leak.
Add padding field and make sure its zeroed before copy to user.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/if_packet.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index dea7d6b7cf98..8851a016d661 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -63,6 +63,7 @@ struct tpacket_auxdata __u16 tp_mac; __u16 tp_net; __u16 tp_vlan_tci; + __u16 tp_padding; }; /* Rx ring - header status */ @@ -103,6 +104,7 @@ struct tpacket2_hdr __u32 tp_sec; __u32 tp_nsec; __u16 tp_vlan_tci; + __u16 tp_padding; }; #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) |