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ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()

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commit b4a81b87a4cfe2bb26a4a943b748d96a43ef20e8 upstream.

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: 88b4a07e66 ("[PATCH] eCryptfs: Public key transport mechanism")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wenwen Wang 2019-08-20 00:33:54 -05:00 • committed by Greg Kroah-Hartman
commit 3c4ef8ac8f
1 changed files with 1 additions and 0 deletions
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1
fs/ecryptfs/messaging.c
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@ -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;
}