Volume Hash Mishmatch on Volume Disk 2s5 error?

Most likely the file system is corrupt. You can try booting into Internet Recovery Mode and running Disk Utility First Aid on the hidden Container. Within Disk Utility you may need to click "View" and select "Show All Devices" so that the hidden Container appears on the left pane of Disk Utility. Even if First Aid says everything is "Ok" click "Show Details" and scroll back through the report to see if any unfixed errors are listed. If there are any unfixed errors listed, then you will need to erase the whole Container, followed by reinstalling macOS and restoring from a backup. Unfortunately Apple's instructions to reinstall macOS are a bit vague here, but I suspect they really mean a clean install versus just reinstalling macOS over top of itself which won't fix any file system issues.

How to reinstall macOS - Apple Support

I've recently seen a post on here where the user mentioned the issue was caused by bad memory (determined by Apple during a repair of their Mac). A failing drive could also be the problem as well as mentioned by @Barney-15E.

Make sure to have a good backup before attempting anything.

You should always have frequent and regular backups of your computer and all external media (including the cloud) which contains important & unique data.

A Bad RAM Module can manifest itself in various ways as per the below links

From what Other in these links found out ;

An overnight Stress Test by Apple or Apple Authorized Device Centre maybe required and be sure to bring along these links as some Techie are not ware of this issue

Please help - Terminal.app keeps crashing upon reopening - macoS Monterey version 12.4

Volume hash mismatch, cannot reinstall MacOS

Monterey rev 12.4 - Hash mismatch

Volume Hash mismatch

Strange Disk Space Issue

Interesting.....thanks for the update.

Glad it is working fine again after the OS update. I also agree with that philosophy as well.

Make sure to have frequent & regular backups. If the file system did not have a problem, I am concerned about a memory issue. Unfortunately this "Volume Hash Mismatch" error has only recently been seen so we really aren't sure what is going on here so the more information we get from users the better. Please update this thread again if the problem recurs.

Well, it’s not clear yet what actually causes the hash mismatch error in macOS, as users have reported it randomly appearing, or after a significant system crash or kernel panic. However, whenever user experience this error message, it’s a good idea to immediately backup all data on the Mac with Time Machine or any other backup method of choice.

Further, user can also try the below troubleshooting methods to fix the issue:

1. Reset SMC

2. Reset PRAM/NVRAM

3. Reinstall macOS

Hope this will help!

Sounds like the drive is failing.

If so, reinstalling won’t help.