Debian has, though only for current stable (updates for oldstable and oldoldstable apparently about to drop) which might imply they had no advanced access to the update so could not pre-test and release immediately upon the coordinated announcement.
Sury is up for all versions too
Not true. I was able to `aptitude update` and `aptitude full-upgrade` before 10:00 AM EST (9:50 AM) and received the new php8.* packages and upgraded fine.
Anyone using a non-default version from the semi-official PPA by Ondrej Sury is still waiting for an update.
The launchpad server is throwing 503 errors all over the place, so that's probably the reason for the delay. Sury's own repo has the fixes all right.
Still no update for ubuntu 20.04 which has support via ESM, even though the patch is available for php 7.4. There are a lot of people using older servers which still have ESM support.
at 15:00 UTC, spot checking, Debian 13 has a fix, Ubuntu 26.04 and Fedora do not.
PHP 8.5.4-0ubuntu1.5 (the fixed version for Ubuntu 26.04) has been downloadable for me via apt from security.ubuntu.com for about 30 minutes. Perhaps check to see that you're not using a different mirror?
You're correct, I was looking for the upstream patch number.