From 676d438e25b8b1fe251c1d474fab86187dbc6293 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 23 Nov 2011 15:49:31 -0500 Subject: ipv6: tcp: fix panic in SYN processing commit c16a98ed91597b40b22b540c6517103497ef8e74 upstream. commit 72a3effaf633bc ([NET]: Size listen hash tables using backlog hint) added a bug allowing inet6_synq_hash() to return an out of bound array index, because of u16 overflow. Bug can happen if system admins set net.core.somaxconn & net.ipv4.tcp_max_syn_backlog sysctls to values greater than 65536 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Cc: Willy Tarreau Signed-off-by: Greg Kroah-Hartman --- net/ipv6/inet6_connection_sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index 8a58e8c..aea323c 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -85,7 +85,7 @@ struct dst_entry *inet6_csk_route_req(struct sock *sk, * request_sock (formerly open request) hash tables. */ static u32 inet6_synq_hash(const struct in6_addr *raddr, const __be16 rport, - const u32 rnd, const u16 synq_hsize) + const u32 rnd, const u32 synq_hsize) { u32 c; -- cgit v1.1