From: Xin Long lucien.xin@gmail.com
[ Upstream commit 25bff6d5478b2a02368097015b7d8eb727c87e16 ]
Now in sctp_endpoint_init(), it holds the sk then creates auth shkey. But when the creation fails, it doesn't release the sk, which causes a sk defcnf leak,
Here to fix it by only holding the sk when auth shkey is created successfully.
Fixes: a29a5bd4f5c3 ("[SCTP]: Implement SCTP-AUTH initializations.") Reported-by: syzbot+afabda3890cc2f765041@syzkaller.appspotmail.com Reported-by: syzbot+276ca1c77a19977c0130@syzkaller.appspotmail.com Signed-off-by: Xin Long lucien.xin@gmail.com Acked-by: Neil Horman nhorman@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/sctp/endpointola.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/net/sctp/endpointola.c +++ b/net/sctp/endpointola.c @@ -125,10 +125,6 @@ static struct sctp_endpoint *sctp_endpoi /* Initialize the bind addr area */ sctp_bind_addr_init(&ep->base.bind_addr, 0);
- /* Remember who we are attached to. */ - ep->base.sk = sk; - sock_hold(ep->base.sk); - /* Create the lists of associations. */ INIT_LIST_HEAD(&ep->asocs);
@@ -165,6 +161,10 @@ static struct sctp_endpoint *sctp_endpoi ep->auth_chunk_list = auth_chunks; ep->prsctp_enable = net->sctp.prsctp_enable;
+ /* Remember who we are attached to. */ + ep->base.sk = sk; + sock_hold(ep->base.sk); + return ep;
nomem_hmacs: