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-rw-r--r--crypto/cipher.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/crypto/cipher.c b/crypto/cipher.c
index a5a88038f0d6..47c77a3e5978 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -101,10 +101,15 @@ struct crypto_cipher *crypto_clone_cipher(struct crypto_cipher *cipher)
if (alg->cra_init)
return ERR_PTR(-ENOSYS);
+ if (unlikely(!crypto_mod_get(alg)))
+ return ERR_PTR(-ESTALE);
+
ntfm = __crypto_alloc_tfmgfp(alg, CRYPTO_ALG_TYPE_CIPHER,
CRYPTO_ALG_TYPE_MASK, GFP_ATOMIC);
- if (IS_ERR(ntfm))
+ if (IS_ERR(ntfm)) {
+ crypto_mod_put(alg);
return ERR_CAST(ntfm);
+ }
ntfm->crt_flags = tfm->crt_flags;