Patch "sctp: translate network order to host order when users get a hmacid" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

sctp: translate network order to host order when users get a hmacid

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
sctp-translate-network-order-to-host-order-when-users-get-a-hmacid.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Xin Long <[email protected]>
Date: Wed, 3 Feb 2016 23:33:30 +0800
Subject: sctp: translate network order to host order when users get a hmacid

From: Xin Long <[email protected]>

[ Upstream commit 7a84bd46647ff181eb2659fdc99590e6f16e501d ]

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.

---
 net/sctp/socket.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

@@ -5542,6 +5542,7 @@ static int sctp_getsockopt_hmac_ident(st
 	struct sctp_hmac_algo_param *hmacs;
 	__u16 data_len = 0;
 	u32 num_idents;
+	int i;
 
 	if (!ep->auth_enable)
 		return -EACCES;

@@ -5559,8 +5560,12 @@ static int sctp_getsockopt_hmac_ident(st
 		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;
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/sctp-translate-network-order-to-host-order-when-users-get-a-hmacid.patch queue-4.4/route-check-and-remove-route-cache-when-we-get-route.patch