Input length smaller than block size does not make sense for XTS.
Signed-off-by: Tudor Ambarus <[email protected]>
---
drivers/crypto/atmel-aes.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 9c6d80d1d7a0..4e9515e8dd25 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -1091,6 +1091,9 @@ static int atmel_aes_crypt(struct skcipher_request *req, unsigned long mode)
struct atmel_aes_dev *dd;
u32 opmode = mode & AES_FLAGS_OPMODE_MASK;
+ if (opmode == AES_FLAGS_XTS && req->cryptlen < XTS_BLOCK_SIZE)
+ return -EINVAL;
+
if ((opmode == AES_FLAGS_ECB || opmode == AES_FLAGS_CBC) &&
!IS_ALIGNED(req->cryptlen, crypto_skcipher_blocksize(skcipher)))
return -EINVAL;
--
2.25.1