Patch "tls: return -EBUSY if crypto_info is already set" has been added to the 4.14-stable tree

Patch "tls: return -EBUSY if crypto_info is already set" has been added to the 4.14-stable tree

[gregkh]

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

    tls: return -EBUSY if crypto_info is already set

to the 4.14-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:
     tls-return-ebusy-if-crypto_info-is-already-set.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sun Jan 28 17:35:08 CET 2018
From: Sabrina Dubroca <sd@queasysnail.net>
Date: Tue, 16 Jan 2018 16:04:27 +0100
Subject: tls: return -EBUSY if crypto_info is already set

From: Sabrina Dubroca <sd@queasysnail.net>


[ Upstream commit 877d17c79b66466942a836403773276e34fe3614 ]

do_tls_setsockopt_tx returns 0 without doing anything when crypto_info
is already set. Silent failure is confusing for users.

Fixes: 3c4d7559159b ("tls: kernel TLS support")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/tls/tls_main.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -364,8 +364,10 @@ static int do_tls_setsockopt_tx(struct s
 	crypto_info = &ctx->crypto_send;
 
 	/* Currently we don't support set crypto info more than one time */
-	if (TLS_CRYPTO_INFO_READY(crypto_info))
+	if (TLS_CRYPTO_INFO_READY(crypto_info)) {
+		rc = -EBUSY;
 		goto out;
+	}
 
 	switch (tmp_crypto_info.cipher_type) {
 	case TLS_CIPHER_AES_GCM_128: {


Patches currently in stable-queue which might be from sd@queasysnail.net are

queue-4.14/tls-reset-crypto_info-when-do_tls_setsockopt_tx-fails.patch
queue-4.14/tls-return-ebusy-if-crypto_info-is-already-set.patch
queue-4.14/tls-fix-sw_ctx-leak.patch