1 files changed, 6 insertions, 1 deletions
diff --git a/crypto/encode_decode/encoder_lib.c b/crypto/encode_decode/encoder_lib.c
index 7a55c7ab9a27..a88332b79d52 100644
--- a/crypto/encode_decode/encoder_lib.c
+++ b/crypto/encode_decode/encoder_lib.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2022 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -59,6 +59,11 @@ int OSSL_ENCODER_to_bio(OSSL_ENCODER_CTX *ctx, BIO *out)
         return 0;
     }
 
+    if (ctx->cleanup == NULL || ctx->construct == NULL) {
+        ERR_raise(ERR_LIB_OSSL_ENCODER, ERR_R_INIT_FAIL);
+        return 0;
+    }
+
     return encoder_process(&data) > 0;
 }