Unraid 7.3.0 is now stable! Read the full announcement on the Unraid blog.

For step-by-step upgrade instructions, see Updating Unraid.

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Highlights

Internal Boot + Licensing

• Boot Unraid from an internal NVMe, SSD, or eMMC device instead of a USB flash drive

• Mirrored boot pool support for redundancy

• New onboarding wizard guides new users through setup including boot method selection; existing users can access it under Tools → Onboarding Wizard

• All new and replacement keys use TPM-based licensing when possible; existing flash-based licensing continues to work unchanged

Security

• Kernel fixes for CVE-2026-31431 (Copy Fail), CVE-2026-43284 and CVE-2026-43500 (Dirty Frag), both local privilege escalation vulnerabilities. Users upgrading from 7.2.5 or earlier get both fixes in one update.

• Package security updates to GnuTLS, Info-ZIP, telnet, X.Org Server, and bind

Docker

• Update Docker to 29.4.3

• New optional fixed MAC address field in Docker templates for stable container network identity across restarts

Storage

• Update ZFS to 2.4.1

• Corrupted files now visible in ZFS pool status

• ZFS ARC max size now configurable at Settings → Disk Settings → Tunable (zfs_arc_max)

• Various ZFS pool replacement, spin-down, and wake fixes

Virtualization

• Update QEMU to 10.2.2 and libvirt to 12.2.0

• Deprecated VM machine types updated automatically on startup

File Manager

• Performance improvements and several edge case fixes for move, rename, and upload operations

Linux Kernel

• Update to 6.18.29-Unraid

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Known Issues

• During internal boot setup, the WebGUI may show Array Offline. DO NOT restart or remove your flash drive during this process.

• Some Docker containers on VLAN networks may still fail to receive DHCP after upgrading from 7.2.4 or 7.2.5. Under investigation.

• Some UPS devices may report "Online No battery detected." The NUT plugin may provide a workaround.

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Rolling Back

• Do not roll back to 7.2.6 or earlier after enabling internal boot or TPM-based licensing.

• If you upgrade ZFS pool features, earlier Unraid releases may not be able to import those pools.

• If considering a rollback below 7.3.0, also see the 7.2.6 release notes.

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Links

• Release Notes

• Blog Post

• Internal Boot FAQ

• TPM Licensing FAQ

• Bug Reports

Edited May 21May 21 by SpencerJ
updated kernel #

I guess I know what I am doing this weekend!

Awesome. I will be doing the upstate as soon as my parity sync is done.

Updated from 7.2.6. All dockers routed through binhex-privoxyvpn continue to fail to start with a bad parameter error as in 7.2.5 and 7.2.6. This was reported in the release notes.

The setup menu after boot offering to install all the apps I need was a surprise. Not sure exactly what it wanted to do since the page was too large for my iPhone display and not scrollable. I had to just close the window. Doesn’t look like I’m missing any apps though.

2 hours ago, wgstarks said:

Updated from 7.2.6. All dockers routed through binhex-privoxyvpn continue to fail to start with a bad parameter error as in 7.2.5 and 7.2.6. This was reported in the release notes.

The setup menu after boot offering to install all the apps I need was a surprise. Not sure exactly what it wanted to do since the page was too large for my iPhone display and not scrollable. I had to just close the window. Doesn’t look like I’m missing any apps though.

Is there any workaround? I need provoxyvpn to be operational - I hope this is resolved because I would like to get rid of usb drive finally

36 minutes ago, GeorgeJetson20 said:

Is there any workaround? I need provoxyvpn to be operational - I hope this is resolved because I would like to get rid of usb drive finally

I just had to re-apply the configurations. Same procedure as generating a docker run command.

7.3.0-rc.2 ---> 7.3.0 Stable went smoothly. Thank you!

What's the recommended size for the boot disk? I need to add virtual disk to my promox VM. I want to set it as small as needed (also for some future development)

Edited May 13May 13 by Stephan4711

1 hour ago, Stephan4711 said:

What's the recommended size for the boot disk? I need to add virtual disk to my promox VM. I want to set it as small as needed (also for some future development)

16g is what we suggest.

And TPM licensing with proxmox host isn't supported? I have an efi disk and a tpm 2.0 configured, but I don't even have any button shown for move to tpm. (the whole Registration button is missing, but entering the URL in the browser works)

TPM licensing is not supported on VMs

Simon says: No TPM on VM :-( ;-)

Edited May 13May 13 by Stephan4711

Possible typo in the CVE there?

On https://unraid.net/blog/unraid-7-3-0 it says:

The 7.3 kernel patches two local privilege escalation vulnerabilities: Copy Fail (CVE-2026-31431) and Dirty Frag (CVE-2025-43284), the latter previously addressed in 7.2.6. Users upgrading from 7.2.5 or earlier get both fixes in one update.

But the last mentioned CVE is from 2025 and concerns macOS.

The changelog for 7.2.6 says

This release contains a Linux kernel upgrade to address CVE-2026-43284 and CVE-2026-43500, the Dirty Frag local privilege escalation vulnerability.

That is a different CVE for a (or the?) Dirty Frag.

Source: comment at

https://tweakers.net/downloads/76928/unraid-730.html?showReaction=22166464#r_22166464

Edited May 13May 13 by Barry Staes
link

I started my Unraid journey 4 weeks ago, today changed the licensing to TPM, switched to boot from NVME with a 64 GB partition (you never know)

- works absolutly flawless!!!

I am totally confinced that Unraid was the right decision.

Update and switch to internal boot went fine.

One thing I don't see mentioned in release notes is that ZFS ARC no longer defaults to 1/8th of RAM but 1/5th. Caused a slight surprise when seeing significantly higher RAM usage.

Edited May 13May 13 by Kilrah

Three systems successfully upgraded (two from 7.3.0-rc.2 and one from 7.2.6) - no issues encountered and all working as expected. Thanks team!

I still see the firefox bug after reboot, you have to restart the session while it works in Edge.

3 hours ago, phantomate12 said:

I saw that the onboarding wizard is not listed in my settings.

It's on the Tools page

Edited May 13May 13 by Kilrah

Just a question regarding an upgrade path from 7.2.6 to 7.3. If I upgrade to 7.3 but for now choose not to use internal boot or TPM, and then I find an issue with 7.3 and my hardware, is it possible to rollback to 7.2.6 or am I forever locked into 7.3+? The wording for the downgrade seems to suggest I would be ok to rollback to 7.2.6 under these circumstances, but I just want to confirm before upgrading.

Edited May 13May 13 by jsiemon

8 minutes ago, jsiemon said:

If I upgrade to 7.3 but for now choose not to use internal boot or TPM, and then I find an issue with 7.3 and my hardware, is it possible to rollback to 7.2.6

Correct, as long as you don't use those features that don't exist in 7.2 or manually upgrade any zfs pools you're good.

Edited May 13May 13 by Kilrah

Migrated 2 Ugreen NAS, DXP480T and DXP6800 Pro, to boot from internal (old UGOS) nvme and also move licenses to TPM (which I was happy to find out that this worked with Ugreen).

All green.

Edited May 13May 13 by manilx

Thanks for pushing out 7.3.0 - I was worried too much love was going to 7.25/6

My "daily driver" server has an Unraid Basic licence - 6 drives limit and I'm using 6.

I bought some Optane 16gb disks to use for boot, but it wasn't supported in the early Betas. Am I able to move to this boot method now? or does it count as a storage drive (when a larger flash drive doesn't!). Would be great news if it is as I'd like to move over to this boot method with either USB flash or TPM licencing.

30 minutes ago, jsebright said:

Am I able to move to this boot method now? or does it count as a storage drive (when a larger flash drive doesn't!).

You are able to use them for NBoot, but they do count for licensing.

What is this supposed to mean? Its the cache pool status, but why is it unknown?

Went from 7.2.6 to 7.3.0. Everything is working as expected except this. I see no errors when I click on the pool and it is operating fine. What does this mean? I'm running a scrub to see if that shows any errors.

It is a RAID0 pool BTRFS

Edited May 13May 13 by craigr