[PATCH 5/5] smb: client: Avoid leaking sensitive data to the heap in connect.c

[Thomas Huth]

From: Thomas Huth <thuth@xxxxxxxxxx>

TCP_Server_Info contains a preauth_sha_hash[] and a cryptkey[] array
that might contain sensitive data. Thus free its memory with
kfree_sensitive() to avoid that we are leaking this information to
the heap.

Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
---
 fs/smb/client/connect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index ba749ec25a59f..5675d7fc2c818 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -1143,7 +1143,7 @@ clean_demultiplex_info(struct TCP_Server_Info *server)
 	put_net(cifs_net_ns(server));
 	kfree(server->leaf_fullpath);
 	kfree(server->hostname);
-	kfree(server);
+	kfree_sensitive(server);
 
 	length = atomic_dec_return(&tcpSesAllocCount);
 	if (length > 0)
-- 
2.55.0