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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-23 15:49:31 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-22 08:41:44 +0100 |
| commit | 676d438e25b8b1fe251c1d474fab86187dbc6293 (patch) | |
| tree | b68b0175b905dd0c12a350eb7c735a84476f9508 | |
| parent | f11d481f8f81dec26d3370bcf8f4c1f2d53ccefc (diff) | |
| download | lwn-676d438e25b8b1fe251c1d474fab86187dbc6293.tar.gz lwn-676d438e25b8b1fe251c1d474fab86187dbc6293.zip | |
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 <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ipv6/inet6_connection_sock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index 8a58e8cf6646..aea323c04222 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; |