From 31545df391d58a3bb60e29b1192644a6f2b5a8dd Mon Sep 17 00:00:00 2001
From: Tudor-Dan Ambarus <tudor.ambarus@microchip.com>
Date: Tue, 3 Apr 2018 09:39:01 +0300
Subject: [PATCH] crypto: authencesn - don't leak pointers to authenc keys
Git-commit: 31545df391d58a3bb60e29b1192644a6f2b5a8dd
Patch-mainline: v4.18-rc1
References: bsc#1051510

In crypto_authenc_esn_setkey we save pointers to the authenc keys
in a local variable of type struct crypto_authenc_keys and we don't
zeroize it after use. Fix this and don't leak pointers to the
authenc keys.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 crypto/authencesn.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crypto/authencesn.c b/crypto/authencesn.c
index 15f91ddd7f0e..50b804747e20 100644
--- a/crypto/authencesn.c
+++ b/crypto/authencesn.c
@@ -90,6 +90,7 @@ static int crypto_authenc_esn_setkey(struct crypto_aead *authenc_esn, const u8 *
 					   CRYPTO_TFM_RES_MASK);
 
 out:
+	memzero_explicit(&keys, sizeof(keys));
 	return err;
 
 badkey:
-- 
2.18.0