diff --git a/KAELz4/src/v1/kaelz4_comp.c b/KAELz4/src/v1/kaelz4_comp.c
index 330ad546befee88598a16e4e980dafcf3e0b6b90..5928b237fab26083984d2197f07f5cf07de06729 100644
--- a/KAELz4/src/v1/kaelz4_comp.c
+++ b/KAELz4/src/v1/kaelz4_comp.c
@@ -15,6 +15,10 @@ __thread struct kaelz4_async_ctrl g_async_ctrl = {0};
 
 void kaelz4_setstatus_v1(LZ4_CCtx* zc, unsigned int status)
 {
+    if (!zc) {
+        US_ERR("kaelz4 ctx is NULL.");
+        return;
+    }
     kaelz4_ctx_t* kaelz4_ctx = (kaelz4_ctx_t*)zc->kaeConfig;
     if (kaelz4_ctx) {
         kaelz4_ctx->lz4_data.blk_type = status;
diff --git a/KAELz4/src/v2/kaelz4_config.c b/KAELz4/src/v2/kaelz4_config.c
index a80ec1ce84303e41b1e4861ebb976e0560c0ab12..1bc3a5d8a7e1722f1dacc71b48d740234977c5ff 100644
--- a/KAELz4/src/v2/kaelz4_config.c
+++ b/KAELz4/src/v2/kaelz4_config.c
@@ -156,6 +156,11 @@ static int kaelz4_create_session(KaeLz4Config *config, int lz4_level)
         return KAE_LZ4_ALLOC_FAIL;
     }
     config->req.dst = malloc(REQ_DSTBUFF_LEN);
+    if (!config->req.dst) {
+        US_ERR("failed to alloc req dst!\n");
+        wd_comp_free_sess(config->sess);
+        return KAE_LZ4_ALLOC_FAIL;
+    }
     config->req.dst_len = REQ_DSTBUFF_LEN;
     config->req.op_type = WD_DIR_COMPRESS;
     config->req.data_fmt = WD_FLAT_BUF;
diff --git a/KAEOpensslEngine/src/v1/alg/ciphers/sec_ciphers_aead.c b/KAEOpensslEngine/src/v1/alg/ciphers/sec_ciphers_aead.c
index 3fe52dbdebc910002dbe6a88d9d5b42365102aca..3e27957557dac614ddfe4f78c8a26db8ac3ae793 100644
--- a/KAEOpensslEngine/src/v1/alg/ciphers/sec_ciphers_aead.c
+++ b/KAEOpensslEngine/src/v1/alg/ciphers/sec_ciphers_aead.c
@@ -285,6 +285,8 @@ static int sec_aes_gcm_init(EVP_CIPHER_CTX *ctx, const unsigned char *ckey,
     if (ckey) {
         ckey_len = EVP_CIPHER_CTX_key_length(ctx);
 		priv_ctx->key = (uint8_t *)kae_malloc(ckey_len); 
+        if (!priv_ctx->key)
+            goto ERR;
 		kae_memcpy(priv_ctx->key, ckey, ckey_len);
         wcrypto_set_aead_ckey(priv_ctx->e_aead_ctx->wd_ctx, priv_ctx->key, ckey_len);
         priv_ctx->key_len = ckey_len;  //感觉多余，考虑是否删除该成员变量
@@ -313,6 +315,7 @@ static int sec_aes_gcm_init(EVP_CIPHER_CTX *ctx, const unsigned char *ckey,
 #endif
 	return OPENSSL_SUCCESS;
 ERR:
+    US_DEBUG("init failed!");
 	sec_aead_engine_cleanup(priv_ctx);
     //do soft?
 	return OPENSSL_FAIL;
diff --git a/KAEZstd/src/v2/kaezstd_compress.c b/KAEZstd/src/v2/kaezstd_compress.c
index ed7b87173d503f92743787194e3d1963d69371c5..d98e727ee95121ec3f4cf7394847823c8a2ec00c 100644
--- a/KAEZstd/src/v2/kaezstd_compress.c
+++ b/KAEZstd/src/v2/kaezstd_compress.c
@@ -23,7 +23,8 @@ void kaezstd_setstatus_v2(ZSTD_CCtx* zc, unsigned int status)
 {
     KaeZstdConfig *config;
     config = kaezstd_get_config(zc);
-    config->tuple.bstatus = status;
+    if (config)
+        config->tuple.bstatus = status;
 }
 
 static int kaezstd_data_parsing(ZSTD_CCtx* zc, KaeZstdConfig* config)