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authorXin Long <lucien.xin@gmail.com>2016-02-03 18:33:30 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-09 12:53:16 +0300
commit7a84bd46647ff181eb2659fdc99590e6f16e501d (patch)
treede102ab893fa2f1714836691658e0735bd27c115 /net/sctp
parentca7f41a4957b872577807169bd7464b36aae9b9c (diff)
downloadlinux-7a84bd46647ff181eb2659fdc99590e6f16e501d.tar.xz
sctp: translate network order to host order when users get a hmacid
Commit ed5a377d87dc ("sctp: translate host order to network order when setting a hmacid") corrected the hmacid byte-order when setting a hmacid. but the same issue also exists on getting a hmacid. We fix it by changing hmacids to host order when users get them with getsockopt. Fixes: Commit ed5a377d87dc ("sctp: translate host order to network order when setting a hmacid") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 5ca2ebfe0be8..e878da0949db 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -5538,6 +5538,7 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
struct sctp_hmac_algo_param *hmacs;
__u16 data_len = 0;
u32 num_idents;
+ int i;
if (!ep->auth_enable)
return -EACCES;
@@ -5555,8 +5556,12 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
return -EFAULT;
if (put_user(num_idents, &p->shmac_num_idents))
return -EFAULT;
- if (copy_to_user(p->shmac_idents, hmacs->hmac_ids, data_len))
- return -EFAULT;
+ for (i = 0; i < num_idents; i++) {
+ __u16 hmacid = ntohs(hmacs->hmac_ids[i]);
+
+ if (copy_to_user(&p->shmac_idents[i], &hmacid, sizeof(__u16)))
+ return -EFAULT;
+ }
return 0;
}