From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , "David S. Miller" , Willy Tarreau Subject: [ 7/7] ipv6: tcp: fix panic in SYN processing Date: Fri, 18 Oct 2013 12:52:54 -0700 Message-Id: <20131018195036.526916841@linuxfoundation.org> In-Reply-To: <20131018195036.020644622@linuxfoundation.org> References: <20131018195036.020644622@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Dumazet 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(-) --- 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(st * 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;