Comment by anacrolix

I reported a bug in their mmap syscall on Apple Silicon. You can hard freeze the computer in about 4 syscalls (basically system C functions). It's still there and they won't fix it, or acknowledge that it's a vulnerability.

The frustrating thing is it locks the IO system, but the kernel thinks everything is fine. One by one each thread that does IO never returns. So you frantically click around wondering why your computer isn't doing anything.