diff mbox

[v2,9/9] crypto: talitos - don't leak pointers to authenc keys

Message ID 20180323104224.5918-10-tudor.ambarus@microchip.com (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show

Commit Message

Tudor Ambarus March 23, 2018, 10:42 a.m. UTC 
In talitos's aead_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>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 drivers/crypto/talitos.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox

Patch

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 447cb8b..c92efc7 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -904,10 +904,12 @@  static int aead_setkey(struct crypto_aead *authenc,
 	ctx->dma_key = dma_map_single(dev, ctx->key, ctx->keylen,
 				      DMA_TO_DEVICE);
 
+	memzero_explicit(&keys, sizeof(keys));
 	return 0;
 
 badkey:
 	crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
+	memzero_explicit(&keys, sizeof(keys));
 	return -EINVAL;
 }