Fix Itanium VFT analysis crashing when possible VFT at section start boundary

The vft will have a few fields above it, we did not verify that when we read those fields that they were readable.

Fixes https://github.com/Vector35/binaryninja-api/issues/6694

1 files changed, 2 insertions, 0 deletions

diff --git a/plugins/rtti/itanium.cpp b/plugins/rtti/itanium.cpp
index 95122fad..cc632045 100644
--- a/plugins/rtti/itanium.cpp
+++ b/plugins/rtti/itanium.cpp
@@ -768,6 +768,8 @@ void ItaniumRTTIProcessor::ProcessVFT()
                 continue;
             // Verify that there is two field sized values above the type info pointer
             optReader.Seek(ref - ArchFieldSize(m_view) * 2);
+            if (!m_view->IsValidOffset(optReader.GetOffset()))
+                continue;
             auto beforeTypeInfoRef = optReader.ReadPointer();
             if (m_view->IsValidOffset(beforeTypeInfoRef))
                 continue;