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authorXin Long <lucien.xin@gmail.com>2019-07-30 15:38:19 +0300
committerDavid S. Miller <davem@davemloft.net>2019-07-31 00:18:14 +0300
commit4c31bc6b1e2ee9c21608506431783dfa525b9989 (patch)
tree93c7b9d7bea7695982a51dcdd29764f72fe3f1f7 /net/sctp
parent1db88c5343712e411a2dd45375f27c477e33dc07 (diff)
downloadlinux-4c31bc6b1e2ee9c21608506431783dfa525b9989.tar.xz
sctp: only copy the available addr data in sctp_transport_init
'addr' passed to sctp_transport_init is not always a whole size of union sctp_addr, like the path: sctp_sendmsg() -> sctp_sendmsg_new_asoc() -> sctp_assoc_add_peer() -> sctp_transport_new() -> sctp_transport_init() In the next patches, we will also pass the address length of data only to sctp_assoc_add_peer(). So sctp_transport_init() should copy the only available data from addr to peer->ipaddr, instead of 'peer->ipaddr = *addr' which may cause slab-out-of-bounds. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/transport.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index e2f8e369cd08..7235a6032671 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -43,8 +43,8 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
gfp_t gfp)
{
/* Copy in the address. */
- peer->ipaddr = *addr;
peer->af_specific = sctp_get_af_specific(addr->sa.sa_family);
+ memcpy(&peer->ipaddr, addr, peer->af_specific->sockaddr_len);
memset(&peer->saddr, 0, sizeof(union sctp_addr));
peer->sack_generation = 0;