| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.2 20/85] sctp: fix the missing put_user when dumping transport thresholds | Date | Wed, 18 Sep 2019 08:18:38 +0200 |
| |
From: Xin Long <lucien.xin@gmail.com>
[ Upstream commit f794dc2304d83ab998c2eee5bab0549aff5c53a2 ]
This issue causes SCTP_PEER_ADDR_THLDS sockopt not to be able to dump a transport thresholds info.
Fix it by adding 'goto' put_user in sctp_getsockopt_paddr_thresholds.
Fixes: 8add543e369d ("sctp: add SCTP_FUTURE_ASSOC for SCTP_PEER_ADDR_THLDS sockopt") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/sctp/socket.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -7176,7 +7176,7 @@ static int sctp_getsockopt_paddr_thresho val.spt_pathmaxrxt = trans->pathmaxrxt; val.spt_pathpfthld = trans->pf_retrans; - return 0; + goto out; } asoc = sctp_id2assoc(sk, val.spt_assoc_id); @@ -7194,6 +7194,7 @@ static int sctp_getsockopt_paddr_thresho val.spt_pathmaxrxt = sp->pathmaxrxt; } +out: if (put_user(len, optlen) || copy_to_user(optval, &val, len)) return -EFAULT;
|