diff options
| author | Alex Shi <alex.shi@linaro.org> | 2016-12-12 22:17:50 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-12-12 22:17:50 +0800 |
| commit | d2a15c13d6db9745a496a89025f665445b586ff2 (patch) | |
| tree | 00cd710425a9354bc46fe42bd4320e121d92647a /net/dccp/ipv4.c | |
| parent | 66e16b528a0b76260617552fce9c44fecb8b51fe (diff) | |
| parent | a057484ab40ff81f22a94bb62c035c78b5abd940 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-rtlsk-v4.4-16.12-rt
Diffstat (limited to 'net/dccp/ipv4.c')
| -rw-r--r-- | net/dccp/ipv4.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 861e1fa25d5e..0759f5b9180e 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -698,6 +698,7 @@ int dccp_invalid_packet(struct sk_buff *skb) { const struct dccp_hdr *dh; unsigned int cscov; + u8 dccph_doff; if (skb->pkt_type != PACKET_HOST) return 1; @@ -719,18 +720,19 @@ int dccp_invalid_packet(struct sk_buff *skb) /* * If P.Data Offset is too small for packet type, drop packet and return */ - if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) { - DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff); + dccph_doff = dh->dccph_doff; + if (dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) { + DCCP_WARN("P.Data Offset(%u) too small\n", dccph_doff); return 1; } /* * If P.Data Offset is too too large for packet, drop packet and return */ - if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) { - DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff); + if (!pskb_may_pull(skb, dccph_doff * sizeof(u32))) { + DCCP_WARN("P.Data Offset(%u) too large\n", dccph_doff); return 1; } - + dh = dccp_hdr(skb); /* * If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet * has short sequence numbers), drop packet and return |