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authorJonathan Corbet <corbet@lwn.net>2019-06-14 14:18:53 -0600
committerJonathan Corbet <corbet@lwn.net>2019-06-14 14:18:53 -0600
commit8afecfb0ec961e37e61b2d19c4fa71617a9482de (patch)
treec43ea51a47b1e76b762caa4c1b0c356249e5e874 /crypto/hmac.c
parentce1a5ea18ef9bf4c62c75abe7c540a29264ec988 (diff)
parentd1fdb6d8f6a4109a4263176c84b899076a5f8008 (diff)
Merge tag 'v5.2-rc4' into mauro
We need to pick up post-rc1 changes to various document files so they don't get lost in Mauro's massive RST conversion push.
Diffstat (limited to 'crypto/hmac.c')
-rw-r--r--crypto/hmac.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c
index a68c1266121f..8b2a212eb0ad 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Cryptographic API.
*
@@ -8,12 +9,6 @@
*
* The HMAC implementation is derived from USAGI.
* Copyright (c) 2002 Kazunori Miyazawa <miyazawa@linux-ipv6.org> / USAGI
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
*/
#include <crypto/hmac.h>
@@ -157,6 +152,10 @@ static int hmac_init_tfm(struct crypto_tfm *tfm)
parent->descsize = sizeof(struct shash_desc) +
crypto_shash_descsize(hash);
+ if (WARN_ON(parent->descsize > HASH_MAX_DESCSIZE)) {
+ crypto_free_shash(hash);
+ return -EINVAL;
+ }
ctx->hash = hash;
return 0;