The new system call #mseal()[1] after multiple revisions and various discussions[2] finally made it to #linux-next and thus is slated to appear in #LinuxKernel 6.10:
https://lore.kernel.org/all/2024041516[email protected]/T/#u
[1] "In a nutshell, mseal() protects the VMAs of a given virtual memory range against modifications, such as changes to their permission bits."

