From 198fc1c1078d32496501ebf583ed636dfe1de7fb Mon Sep 17 00:00:00 2001
From: Thorsten Zachmann <t.zachmann@zagge.de>
Date: Fri, 13 Dec 2024 11:55:33 +0100
Subject: [PATCH] Fix bug #863

---
 src/pefile.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/pefile.cpp b/src/pefile.cpp
index aad4b65f..b40a8e72 100644
--- a/src/pefile.cpp
+++ b/src/pefile.cpp
@@ -1224,6 +1224,10 @@ void PeFile::Export::convert(unsigned eoffs, unsigned esize) {
     size += len;
     iv.add_interval(edir.name, len);
 
+    if (upx_uint64_t(edir.functions + edir.names) * 4 >= upx_uint64_t(esize)) {
+        throwInternalError("bad export directory, outside size");
+    }
+
     len = 4 * edir.functions;
     functionptrs = New(char, len + 1);
     memcpy(functionptrs, base + edir.addrtable, len);