diff --git a/utilities/blob_db/blob_db_impl.cc b/utilities/blob_db/blob_db_impl.cc
index fc8110d222..0a51acdc7c 100644
--- a/utilities/blob_db/blob_db_impl.cc
+++ b/utilities/blob_db/blob_db_impl.cc
@@ -159,6 +159,8 @@ BlobDBOptions BlobDBImpl::GetBlobDBOptions() const { return bdb_options_; }
 BlobDBImpl::BlobDBImpl(DB* db, const BlobDBOptions& blob_db_options)
     : BlobDB(db),
       db_impl_(static_cast_with_check<DBImpl, DB>(db)),
+      env_(nullptr),
+      ttl_extractor_(nullptr),
       bdb_options_(blob_db_options),
       db_options_(db->GetOptions()),
       env_options_(db_->GetOptions()),
@@ -170,6 +172,8 @@ BlobDBImpl::BlobDBImpl(DB* db, const BlobDBOptions& blob_db_options)
       current_epoch_(0),
       open_file_count_(0),
       total_blob_space_(0),
+      open_p1_done_(false),
+      debug_level_(0),
       oldest_file_evicted_(false) {
   if (!bdb_options_.blob_dir.empty())
     blob_dir_ = (bdb_options_.path_relative)
diff --git a/utilities/col_buf_decoder.h b/utilities/col_buf_decoder.h
index e795e4ecdf..0311a41001 100644
--- a/utilities/col_buf_decoder.h
+++ b/utilities/col_buf_decoder.h
@@ -43,7 +43,10 @@ class FixedLengthColBufDecoder : public ColBufDecoder {
       : size_(size),
         col_compression_type_(col_compression_type),
         nullable_(nullable),
-        big_endian_(big_endian) {}
+        big_endian_(big_endian),
+        remain_runs_(0),
+        run_val_(0),
+        last_val_(0) {}
 
   size_t Init(const char* src) override;
   size_t Decode(const char* src, char** dest) override;