mirror of https://github.com/torvalds/linux.git
f4a87e7bd2
TCP packets hitting the SYN proxy through the SYNPROXY target are not validated by TCP conntrack. When th->doff is below 5, an underflow happens when calculating the options length, causing skb_header_pointer() to return NULL and triggering the BUG_ON(). Handle this case gracefully by checking for NULL instead of using BUG_ON(). Reported-by: Martin Topholm <mph@one.com> Tested-by: Martin Topholm <mph@one.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| arp_tables.c | ||
| arpt_mangle.c | ||
| arptable_filter.c | ||
| ip_tables.c | ||
| ipt_CLUSTERIP.c | ||
| ipt_ECN.c | ||
| ipt_MASQUERADE.c | ||
| ipt_REJECT.c | ||
| ipt_SYNPROXY.c | ||
| ipt_ULOG.c | ||
| ipt_ah.c | ||
| ipt_rpfilter.c | ||
| iptable_filter.c | ||
| iptable_mangle.c | ||
| iptable_nat.c | ||
| iptable_raw.c | ||
| iptable_security.c | ||
| nf_conntrack_l3proto_ipv4.c | ||
| nf_conntrack_l3proto_ipv4_compat.c | ||
| nf_conntrack_proto_icmp.c | ||
| nf_defrag_ipv4.c | ||
| nf_nat_h323.c | ||
| nf_nat_l3proto_ipv4.c | ||
| nf_nat_pptp.c | ||
| nf_nat_proto_gre.c | ||
| nf_nat_proto_icmp.c | ||
| nf_nat_snmp_basic.c | ||