diff options
| author | Mariusz Kozlowski <mk@lab.zgora.pl> | 2010-11-08 11:58:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-01-07 13:58:29 -0800 |
| commit | 8cd7b4be422ff636fb4359a77c437a214c6f272f (patch) | |
| tree | c511c22cc9c9639c0dd573381a8034ed613bcc6a /net | |
| parent | 948ac19ea40013395fd277d43fd9ea3c3dcb491a (diff) | |
net: Fix header size check for GSO case in recvmsg (af_packet)
[ Upstream commit 1f18b7176e2e41fada24584ce3c80e9abfaca52b]
Parameter 'len' is size_t type so it will never get negative.
Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/packet/af_packet.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 9a17f28b1253..c615b0f73b92 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1610,9 +1610,11 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, err = -EINVAL; vnet_hdr_len = sizeof(vnet_hdr); - if ((len -= vnet_hdr_len) < 0) + if (len < vnet_hdr_len) goto out_free; + len -= vnet_hdr_len; + if (skb_is_gso(skb)) { struct skb_shared_info *sinfo = skb_shinfo(skb); |