RELEASE NOTES: JDK 21.0.13

Notes generated: Wed Jun 10 07:05:07 CEST 2026

JEPs

None.

RELEASE NOTES

None.

FIXED ISSUES

hotspot/runtime

Priority Bug Summary
P4 JDK-8375125 assert(false) failed: "Attempting to acquire lock NativeHeapTrimmer_lock/nosafepoint out of order with lock ConcurrentHashTableResize_lock/nosafepoint-2 -- possible deadlock" when using native heap trimmer

infrastructure

Priority Bug Summary
P3 JDK-8361950 Update to use jtreg 8
P4 JDK-8385508 Bump update version for OpenJDK: jdk-21.0.13