[PATCH v4 06/10] crypto: arm/aes-neonbs - clear the crypto_aes_ctx when done

[Thomas Huth <thuth@redhat.com>]

From: Thomas Huth <thuth@redhat.com>

Clear the crypto_aes_ctx structure via __cleanup(aes_zeroize_ctx) when
we're done with it to avoid that key data could leak on the stack.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 arch/arm/crypto/aes-neonbs-glue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/crypto/aes-neonbs-glue.c b/arch/arm/crypto/aes-neonbs-glue.c
index c49ddafc54f34..f0c8bfd2ac8fc 100644
--- a/arch/arm/crypto/aes-neonbs-glue.c
+++ b/arch/arm/crypto/aes-neonbs-glue.c
@@ -60,7 +60,7 @@ static int aesbs_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
 			unsigned int key_len)
 {
 	struct aesbs_ctx *ctx = crypto_skcipher_ctx(tfm);
-	struct crypto_aes_ctx rk;
+	struct crypto_aes_ctx rk __cleanup(aes_zeroize_ctx);
 	int err;
 
 	err = aes_expandkey(&rk, in_key, key_len);
-- 
2.55.0