The issue was addressed with improved bounds checks. This issue is fixed in iOS 16.2 and iPadOS 16.2, macOS Ventura 13.1, tvOS 16.2. Connecting to a malicious NFS server may lead to arbitrary code execution with kernel privileges.
https://support.apple.com/en-us/HT213535
https://support.apple.com/en-us/HT213532
https://support.apple.com/en-us/HT213443
https://support.apple.com/en-us/HT213530
http://seclists.org/fulldisclosure/2022/Dec/26