Bug: IObjectReference crashes GC collection on 25H2 ARM64

[dongle-the-gadget]

Description

IObjectReference.Release causes a SEHException/ExecutionEngineException/access violation on 25H2 ARM64 during GC collection, on both CoreCLR and NativeAOT. The bug does not reproduce on Windows 10 ARM64, nor does Windows 11 25H2 x64.

Steps To Reproduce

Not a minimal repo, but the app is at https://github.com/ahmed605/MrmTool

1. Clone the repo and run the MrmTool project
2. Open a PRI file (i.e. the resources.pri file from MrmTool's build output) from MrmTool
3. Open a file from the tree view
4. Click on a candidate at the top right
5. Repeat step 3 and 4 until the app crashes

TTD run file: https://dongleave.blob.core.windows.net/mrmtool01-run/MrmTool01.zip

Expected Behavior

The application should not crash.

Version Info

CsWinRT 2.3.0-prerelease.251115.2
.NET 10
Windows 11 25H2 (version 26300.7674, 26200.7623 also affected) ARM64

Additional Context

No response

[ahmed605]

The object seems to be BufferView from MrmLib (the screenshot below shows the object's allocation callstack)

PDB for MrmLib.dll: MrmLib.pdb