From b4a81b87a4cfe2bb26a4a943b748d96a43ef20e8 Mon Sep 17 00:00:00 2001

From: Wenwen Wang <wenwen@cs.uga.edu>

Date: Tue, 20 Aug 2019 00:33:54 -0500

Subject: [Backport b4a81b87a4cf] ecryptfs: fix a memory leak bug in

 ecryptfs_init_messaging()

In ecryptfs_init_messaging(), if the allocation for 'ecryptfs_msg_ctx_arr'

fails, the previously allocated 'ecryptfs_daemon_hash' is not deallocated,

leading to a memory leak bug. To fix this issue, free

'ecryptfs_daemon_hash' before returning the error.

Cc: stable@vger.kernel.org

Fixes: 88b4a07e6610 ("[PATCH] eCryptfs: Public key transport mechanism")

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

---

 src/messaging.c | 1 +

 1 file changed, 1 insertion(+)

diff --git a/src/messaging.c b/src/messaging.c

index d668e60b85b556dd27b08a345a222688b795257c..c05ca39aa4494f9077768fc9e04b21d817a3401b 100644

--- a/src/messaging.c

+++ b/src/messaging.c

@@ -379,6 +379,7 @@ int __init ecryptfs_init_messaging(void)

 					* ecryptfs_message_buf_len),

 				       GFP_KERNEL);

 	if (!ecryptfs_msg_ctx_arr) {

+		kfree(ecryptfs_daemon_hash);

 		rc = -ENOMEM;

 		goto out;

 	}

-- 

2.31.1