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-rw-r--r--crypto/aead.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index fbf0ec93bc8e..ce035589cf57 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -70,7 +70,8 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
{
int err;
- if (authsize > crypto_aead_maxauthsize(tfm))
+ if ((!authsize && crypto_aead_maxauthsize(tfm)) ||
+ authsize > crypto_aead_maxauthsize(tfm))
return -EINVAL;
if (crypto_aead_alg(tfm)->setauthsize) {