It's that time again: there are new JVM updates released today (Apr 15, 2025) for the current long-term support (LTS) releases of Oracle Java, 8, 11, 17, and 21, as well as the new short-term release 24. (The previous short-term release, Java 23, is no longer updated.)
TLDR: The new updates are 1.8.0_451 (aka 8u451), 11.0.27, 17.0.15, 21.0.7, and 24.0.1, respectively. Crazy that there are now 5 current Java releases, I do realize. More below, including links to more on each of them including what changed, bug fixes, and the security fixes each version contains, which are offered in Oracle resources I list below.
Oracle calls these updates "critical patch updates" (yep, "CPU"), but they are in fact scheduled quarterly updates, so that the "critical" aspect of this nomenclature may sometimes be a bit overstated. As is generally the case with these Java updates, most of them have the same changes and fixes across the four JVM versions, though not always.
For some folks, that's all they need to hear. For others, read on.
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