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-rw-r--r--include/linux/crypto.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 9c8776d..fb5ef16 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -1147,7 +1147,7 @@ static inline void ablkcipher_request_free(struct ablkcipher_request *req)
* cipher operation completes.
*
* The callback function is registered with the ablkcipher_request handle and
- * must comply with the following template:
+ * must comply with the following template
*
* void callback_function(struct crypto_async_request *req, int error)
*/
@@ -1174,7 +1174,7 @@ static inline void ablkcipher_request_set_callback(
*
* For encryption, the source is treated as the plaintext and the
* destination is the ciphertext. For a decryption operation, the use is
- * reversed: the source is the ciphertext and the destination is the plaintext.
+ * reversed - the source is the ciphertext and the destination is the plaintext.
*/
static inline void ablkcipher_request_set_crypt(
struct ablkcipher_request *req,
@@ -1412,6 +1412,9 @@ static inline int crypto_aead_encrypt(struct aead_request *req)
*/
static inline int crypto_aead_decrypt(struct aead_request *req)
{
+ if (req->cryptlen < crypto_aead_authsize(crypto_aead_reqtfm(req)))
+ return -EINVAL;
+
return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
}
@@ -1506,7 +1509,7 @@ static inline void aead_request_free(struct aead_request *req)
* completes
*
* The callback function is registered with the aead_request handle and
- * must comply with the following template:
+ * must comply with the following template
*
* void callback_function(struct crypto_async_request *req, int error)
*/
@@ -1533,7 +1536,7 @@ static inline void aead_request_set_callback(struct aead_request *req,
*
* For encryption, the source is treated as the plaintext and the
* destination is the ciphertext. For a decryption operation, the use is
- * reversed: the source is the ciphertext and the destination is the plaintext.
+ * reversed - the source is the ciphertext and the destination is the plaintext.
*
* IMPORTANT NOTE AEAD requires an authentication tag (MAC). For decryption,
* the caller must concatenate the ciphertext followed by the

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