In the Linux kernel before 6.6.7, an untrusted VMM can trigger int80 syscall handling at any given point. This is related to arch/x86/coco/tdx/tdx.c and arch/x86/mm/mem_encrypt_amd.c.
No PoCs from references.
- https://github.com/ahoi-attacks/heckler
- https://github.com/fkie-cad/nvd-json-data-feeds