java-21-openjdk-21.0.8.0.9-1.el9.ML.1

The OpenJDK 21 packages provide the OpenJDK 21 Java Runtime Environment and the
OpenJDK 21 Java Software Development Kit.

Security Fix(es):

JDK: Better Glyph drawing (CVE-2025-30749)
JDK: Enhance TLS protocol support (CVE-2025-30754)
JDK: Improve HTTP client header handling (CVE-2025-50059)
JDK: Better Glyph drawing redux (CVE-2025-50106)

Bug Fix(es):

In Red Hat Enterprise Linux 9 and Red Hat Enterprise Linux 10 systems, the
default graphical display system is Wayland. The use of Wayland in these systems
causes a failure in the traditional X11 method that java.awt.Robot uses to take
a screen capture, producing a blank image. With this update, the RPM now
recommends installing the PipeWire package, which the JDK can use to take screen
captures in Wayland systems (RHEL-102683, RHEL-102684, RHEL-102685)
On NUMA systems, the operating system can choose to migrate a task from one
NUMA node to another. In the G1 garbage collector, G1AllocRegion objects are
associated with NUMA nodes. The G1Allocator code assumes that obtaining the
G1AllocRegion object for the current thread is sufficient, but OS scheduling can
lead to arbitrary changes in the NUMA-to-thread association. This can cause
crashes when the G1AllocRegion being used changes mid-operation. This update
resolves this issue by always using the same NUMA node and associated
G1AllocRegion object throughout an operation. (RHEL-90307, RHEL-90308,
RHEL-90311)

CVE(s):
CVE-2025-30749
CVE-2025-30754
CVE-2025-50059
CVE-2025-50106