From bbf225b7883e33b79cf115e6b60540f4a77886e5 Mon Sep 17 00:00:00 2001
From: Simon Cruanes <simon.cruanes.2007@m4x.org>
Date: Mon, 2 Jun 2025 10:41:09 -0400
Subject: [PATCH] add a sanity check to fuchsia importer

---
 import/src/import-fuchsia.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/import/src/import-fuchsia.cpp b/import/src/import-fuchsia.cpp
index fb4debbf..785979c1 100644
--- a/import/src/import-fuchsia.cpp
+++ b/import/src/import-fuchsia.cpp
@@ -188,6 +188,12 @@ std::pair<bool, Record> read_next_record(std::vector<uint8_t> const &input, size
   CHECK_BOUND(offset + 8*len_word);
 
   Record r{(uint64_t *)&input[offset], len_word, header};
+
+  if (len_word == 0) {
+    fprintf(stderr, "warning: invalid record with length=0 at offset %" PRIu64 "\n", offset); \
+    return std::make_pair(false,Record{}); \
+  }
+
   offset += 8 * len_word;
   return std::make_pair(true, r);
 }