It may happen that the variable req->iv may have stale values or
zero sized buffer by default and may end up getting used during
encryption/decryption. This inturn may corrupt the results or break the
operation. Set the req->iv variable to NULL explicitly for algorithms
like AES-ECB where IV is not used.
Fixes: 0880bb3b00c8 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Akhil R <akhilrajeev@xxxxxxxxxx>
---
drivers/crypto/tegra/tegra-se-aes.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/tegra/tegra-se-aes.c b/drivers/crypto/tegra/tegra-se-aes.c
index c97dc2043b3d..196f3b7ad7bb 100644
--- a/drivers/crypto/tegra/tegra-se-aes.c
+++ b/drivers/crypto/tegra/tegra-se-aes.c
@@ -446,6 +446,9 @@ static int tegra_aes_crypt(struct skcipher_request *req, bool encrypt)
if (!req->cryptlen)
return 0;
+ if (ctx->alg == SE_ALG_ECB)
+ req->iv = NULL;
+
rctx->encrypt = encrypt;
rctx->config = tegra234_aes_cfg(ctx->alg, encrypt);
rctx->crypto_config = tegra234_aes_crypto_cfg(ctx->alg, encrypt);
--
2.43.2
