Input length smaller than block size does not make sense for XTS. Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx> --- 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
