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| author | Harald Welte <laforge@netfilter.org> | 2005-11-03 13:05:20 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@mandriva.com> | 2005-11-04 23:19:17 -0200 |
| commit | d811552eda2476215d69d485e437d2dcae1ab0b4 (patch) | |
| tree | eb745550f1d2e40dafc71d95c20ec3e46ce9fdda /net/ipv4 | |
| parent | 3428c209c6820bbbb7dfb323caef8d402b3deb4c (diff) | |
| download | blackbird-op-linux-d811552eda2476215d69d485e437d2dcae1ab0b4.tar.gz blackbird-op-linux-d811552eda2476215d69d485e437d2dcae1ab0b4.zip | |
[NETFILTER] PPTP helper: Fix endianness bug in GRE key / CallID NAT
This endianness bug slipped through while changing the 'gre.key' field in the
conntrack tuple from 32bit to 16bit.
None of my tests caught the problem, since the linux pptp client always has
'0' as call id / gre key. Only windows clients actually trigger the bug.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/ip_nat_proto_gre.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/netfilter/ip_nat_proto_gre.c b/net/ipv4/netfilter/ip_nat_proto_gre.c index 7c1285401672..f7cad7cf1aec 100644 --- a/net/ipv4/netfilter/ip_nat_proto_gre.c +++ b/net/ipv4/netfilter/ip_nat_proto_gre.c @@ -139,8 +139,8 @@ gre_manip_pkt(struct sk_buff **pskb, break; case GRE_VERSION_PPTP: DEBUGP("call_id -> 0x%04x\n", - ntohl(tuple->dst.u.gre.key)); - pgreh->call_id = htons(ntohl(tuple->dst.u.gre.key)); + ntohs(tuple->dst.u.gre.key)); + pgreh->call_id = tuple->dst.u.gre.key; break; default: DEBUGP("can't nat unknown GRE version\n"); |
