1 files changed, 2 insertions, 0 deletions

diff --git a/crypto/hmac.c b/crypto/hmac.c
index a68c1266121f..241b1868c1d0 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -157,6 +157,8 @@ 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))
+                return -EINVAL;
 
         ctx->hash = hash;
         return 0;