From 90d86ea59e25e82d5ac0768c9dbfaef19cc8ff3c Mon Sep 17 00:00:00 2001
From: John Reiser <jreiser@BitWagon.com>
Date: Thu, 27 Feb 2025 17:10:52 -0800
Subject: [PATCH] Prevent leak even if corrupted input

https://issues.oss-fuzz.com/u/1/issues/42531955
	modified:   pefile.cpp
---
 src/pefile.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/pefile.cpp b/src/pefile.cpp
index 9cf12e24..8b11e1bf 100644
--- a/src/pefile.cpp
+++ b/src/pefile.cpp
@@ -1718,6 +1718,8 @@ PeFile::Resource::upx_rnode *PeFile::Resource::convert(const void *rnode, upx_rn
     branch->nc = ic;
     branch->children = New(upx_rnode *, ic);
     branch->data = *node;
+    if (!root)         // first one
+        root = branch; // prevent leak if xcheck throws (hacked unpack or test)
 
     for (const res_dir_entry *rde = node->entries + ic - 1; --ic >= 0; rde--) {
         upx_rnode *child = convert(start + (rde->child & 0x7fffffff), branch, level + 1);