[ANNOUNCE] v6.12.89-rt18

From: Daniel Wagner

Date: Sat May 16 2026 - 13:34:47 EST


Hello RT-list!

I'm pleased to announce the 6.12.89-rt18 stable release. This is just an
update to the latest stable release. No RT specific changes.

During my testing, I saw some spikes on my x86 box, but so far I haven't
been able to identify the issue. I recently updated the entire lab, so
it could simply be a misconfiguration or something similar. Since there
were a number of high-profile CVE fixes in the stable release, I didn't
want to hold off this release, especially since there are no RT changes
at all that could cause a regression.

You can get this release via the git tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

branch: v6.12-rt-patches
Head SHA1: da81d744fde93759451b625bdcaf1c4eb7a3b18f

Or to build 6.12.89-rt18 directly, the following patches should be applied:

https://www.kernel.org/pub/linux/kernel/v6.x/linux-6.12.tar.xz

https://www.kernel.org/pub/linux/kernel/v6.x/patch-6.12.89.xz

https://www.kernel.org/pub/linux/kernel/projects/rt/6.12/older/patch-6.12.89-rt18.patch.xz

Signing key fingerprint:

5BF6 7BC5 0826 72CA BB45 ACAE 587C 5ECA 5D0A 306C

All keys used for the above files and repositories can be found on the
following git repository:

git://git.kernel.org/pub/scm/docs/kernel/pgpkeys.git

Enjoy!
Daniel