From fd42ad0cfa936e96be0a8eb0b5146a0ac9f3a8b1 Mon Sep 17 00:00:00 2001
From: Luke <17146677+LukeFZ@users.noreply.github.com>
Date: Mon, 1 Jan 2024 04:08:12 +0100
Subject: [PATCH] ELF: Properly handle address outside of file-backed regions
 (#240)

---
 LibCpp2IL/Elf/ElfFile.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/LibCpp2IL/Elf/ElfFile.cs b/LibCpp2IL/Elf/ElfFile.cs
index 65c5c997..7b5e4c11 100644
--- a/LibCpp2IL/Elf/ElfFile.cs
+++ b/LibCpp2IL/Elf/ElfFile.cs
@@ -691,6 +691,13 @@ public override long MapVirtualAddressToRaw(ulong addr, bool throwOnError = true
                     throw new InvalidOperationException($"No entry in the Elf PHT contains virtual address 0x{addr:X}");
                 else
                     return VirtToRawInvalidNoMatch;
+            
+            if (addr >= section.VirtualAddress + section.RawSize)
+                if (throwOnError)
+                    throw new InvalidOperationException(
+                        $"Virtual address {section.VirtualAddress:X} is located outside of the file-backed portion of Elf PHT section at 0x{section.VirtualAddress:X}");
+                else
+                    return VirtToRawInvalidOutOfBounds;
 
             return (long) (addr - (section.VirtualAddress - section.RawAddress));
         }