Liberica JDK 11.0.20+8 Release Notes

The full version string for this update release is 11.0.20+8. The version number is 11.

Liberica JDK 11.0.20+8

Liberica is a certified, Java SE 11-compliant distribution of OpenJDK 11 which works on server (Linux x86_64, Linux ARM64, Windows 64), desktop (Windows 64, Windows 32, Mac, Linux x86_64), and embedded devices (Linux ARM64, Linux ARMv7, including Raspberry Pi 2 & 3 (ARMv6 hardfloat)). It has the following notable additions:

  • Linux x86_64 version contains experimental support for ZGC.
  • Linux x86_64, ARMv8 and ARMv7 distributions include a choice of Client VM, Server VM and Minimal VM.
  • Alpine Linux x86_64 version is build with musl support.
  • Windows x86_64, Windows x86, Windows ARMv8, Mac, Linux x86_64, Linux x86 and Linux ARMv7 distributions contain OpenJFX 11.
  • Linux ARMv7 distribution contains Device IO API compiled for Raspberry Pi.

Please refer to the Oracle JDK 11.0.20 release notes for further information on JDK 11 features. This document further outlines the peculiarities of Liberica distribution as compared to Oracle JDK 11 distribution.

Supported Server and Desktop configurations

Liberica is supported on the following OSes:

  • Ubuntu Linux 16.04, 18.04, 20.04 (x86, x86_64, ARMv7, ARMv8)
  • Debian Linux 8, 9, 10 (x86, x86_64, ARMv7, ARMv8)
  • Red Hat, Oracle Linux and CentOS 8x, 6.x, 7.x (x86, x86_64, ARMv7, ARMv8)
  • Alpine Linux 3.7+ (x86_64, ARMv8)
  • SUSE Linux Enterprise 12, 15 and tumbleweed (x86_64, ARMv8)
  • Apple macOS 10.11+ (x86_64, ARMv8)
  • Microsoft Windows 2019, Windows 2016, Windows 2012 R2, Windows 10, Windows 8, Windows 7 (x86, x86_64, ARMv8)

It is also known to work on other Linux distributions and Windows versions.

Note: The minimum supported Linux kernel version is 2.6.18 and GLIBC version 2.6. LibericaFX works on all supported Ubuntu versions, Red Hat Linux family starting from 7.x and SUSE versions with GTK3 backend.

Supported Embedded configurations

Liberica is tested and certified on Raspberry Pi 2, 3 and 4 running the following OSes:

  • Raspbian OS (armhf)
  • OpenSUSE (armv8)

It is also known to work with Debian (armhf) and Ubuntu (armhf).

Liberica JDK 11 distribution

Liberica JDK 11 are distributed as .rpm, .zip, .deb and .tar.gz packages. Please select the one which is most appropriate for your purposes.

Liberica JDK 11 introduced all new features supported by OpenJDK 11.

With the introduction of the Jigsaw feature in JDK 9 and Minimal VM it is now possible to create a Runtime that is sufficient to run your application and trim down the size of the Runtime. To generate a Runtime with just the Minimal VM, add --vm=minimal to jlink options.

Liberica JDK continues to provide support for AOT and Graal JIT. Since in OpenJDK 11 builds these features are deemed experimental and deprecated, it is recommended to compile native executables with Liberica Native Image Kit to avoid errors.

By default, the Liberica uses Server VM. Server VM and Client VM can be enabled with -server and -client command line options, respectively. In case the deployment requires to minimize the footprint, it may be beneficial to use Minimal VM, which emphasises on a minimal footprint. It has C1 JIT compiler only, Serial GC and no serviceability features.

LibericaFX for the Raspberry Pi

Liberica JDK 11 come with a bundled LibericaFX implementation, which is based on OpenJFX. The following tables lists Java FX modules status of Liberica distribution

  • Java FX Graphics - works.
  • Java FX Controls - works.
  • Java FX Media - does not work.
  • Java FX Webkit - does not work.

The following pipelines are known to work: EGL, SW (direct framebuffer) and GTK. By default, Liberica tries to use the accelerated EGL pipeline, which requires the presence of EGL libraries. If they are not found, the implementation falls back to software rendering.

Use the following command line options to specify the rendering pipeline:

  • -Dprism.order=sw forces the use of software rendering pipeline. *
  • -Dprism.order=es2 forces the use of EGL pipeline and hardware acceleration. *
  • -Djavafx.platform=gtk if you would like to launch a LibericaFX application using Liberica from X11.

* Not supported on Raspberry Pi 4.

Please refer to the following wiki for more information.

Device IO API for the Raspberry Pi

Liberica JDK 11 comes with a bundled OpenJDK Device I/O (DIO) API implementation module. DIO provides a Java API for accessing Raspberry PI GPIO pins and for communicating with peripheral devices:

  • General Purpose Input/Output (GPIO).
  • Inter-Integrated Circuit Bus (I2C), Serial Peripheral Interface (SPI).
  • Universal Asynchronous Receiver/Transmitter (UART).

Please refer to the following wiki for more information.

Security Baselines

BellSoft Liberica follows the security baselines for Oracle Java SE. Please refer to the Oracle documentation for a list of issues fixed in a given release.

Known Issues

LibericaFX and EGL on Raspbian

As of 2017, the default location of Broadcom and has changed in Raspbian OS. If you'd like to leverage hardware EGL acceleration available from Broadcom video drivers in LibericaFX while running a recent Raspbian OS, run the following command:

cd /opt/vc/lib
sudo ln -s
sudo ln -s


This is the list of the security issues fixed in this release. CVSS scores are provided using the CVSS version 3.1 scoring system.

CVE ID Score Component Module Attack vector Complexity Privileges User interaction Scope Confidentiality Integrity Availability
CVE-2023-22043 5.9 javafx graphics network high none none unchanged none high none
CVE-2023-22041 5.1 hotspot compiler local high none none unchanged high none none
CVE-2023-25193 3.7 client-libs 2d network high none none unchanged none none low
CVE-2023-22045 3.7 hotspot compiler network high none none unchanged low none none
CVE-2023-22049 3.7 core-libs network high none none unchanged none low none
CVE-2023-22036 3.7 core-libs java.util network high none none unchanged none none low
CVE-2023-22006 3.1 core-libs network high none required unchanged none low none

Issues fixed

Issue Description
JDK-8308682 Enhance AES performance
JDK-8305312 Enhanced path handling
JDK-8304468 Better array usages
JDK-8303376 Better launching of JDI
JDK-8302483 Enhance ZIP performance
JDK-8302475 Enhance HTTP client file downloading
JDK-8300596 Enhance Jar Signature validation
JDK-8300285 Enhance TLS data handling
JDK-8298676 Enhanced Look and Feel
JDK-8311465 [11u] Remove designator DEFAULT_PROMOTED_VERSION_PRE=ea for release 11.0.20
JDK-8303465 KeyStore of type KeychainStore, provider Apple does not show all trusted certificates
JDK-8309476 [11u] tools/jmod/hashes/ fails intermittently
JDK-8304291 [AIX] Broken build after JDK-8301998
JDK-8308884 [17u/11u] Backout JDK-8297951
JDK-8287876 The recently de-problemlisted TestTitledBorderLeak test is unstable
JDK-8269746 C2: assert(!in->is_CFG()) failed: CFG Node with no controlling input?
JDK-8246383 NullPointerException in JceSecurity.getVerificationResult when using Entrust provider
JDK-8300079 SIGSEGV in LibraryCallKit::inline_string_copy due to constant NULL src argument
JDK-8299259 C2: Div/Mod nodes without zero check could be split through iv phi of loop resulting in SIGFPE
JDK-8307134 Add GTS root CAs
JDK-8287007 [cgroups] Consistently use stringStream throughout parsing code
JDK-8301119 Support for GB18030-2022
JDK-8275233 Incorrect line number reported in exception stack trace thrown from a lambda expression
JDK-8278434 timeouts in test java/time/test/java/time/format/
JDK-8287246 DSAKeyValue should check for missing params instead of relying on KeyFactory provider
JDK-8275735 [linux] Remove deprecated Metrics api (kernel memory limit)
JDK-8304760 Add 2 Microsoft TLS roots
JDK-8295974 jni_FatalError and Xcheck:jni warnings should print the native stack when there are no Java frames
JDK-8304350 Font.getStringBounds calculates wrong width for TextAttribute.TRACKING other than 0.0
JDK-8305975 Add TWCA Global Root CA
JDK-8243936 NonWriteable system properties are actually writeable
JDK-8282201 Consider removal of expiry check in test
JDK-8308006 Missing NMT memory tagging in CMS
JDK-8303822 gtestMain should give more helpful output
JDK-8307811 [TEST] compilation of TimeoutInErrorHandlingTest fails after backport of JDK-8303861
JDK-8214807 Improve handling of very old class files
JDK-8285497 Add system property for Java SE specification maintenance version
JDK-8282467 add extra diagnostics for JDK-8268184
JDK-8303576 addIdentitiesToKeystore in KeystoreImpl.m needs CFRelease call in early potential CHECK_NULL return
JDK-8303354 addCertificatesToKeystore in KeystoreImpl.m needs CFRelease call in early potential CHECK_NULL return
JDK-8305682 Update the javadoc in the Character class to state support for GB 18030-2022 Implementation Level 2
JDK-8301401 Allow additional characters for GB18030-2022 support
JDK-8301998 Update HarfBuzz to 7.0.1
JDK-8304295 harfbuzz build fails with GCC 7 after JDK-8301998
JDK-8296934 Write a test to verify whether Undecorated Frame can be iconified or not
JDK-8292206 fails as getMemoryUsage() is lower than expected
JDK-8282077 PKCS11 provider C_sign() impl should handle CKR_BUFFER_TOO_SMALL error
JDK-8209880 tzdb.dat is not reproducibly built
JDK-8248701 On Windows generated modules-deps.gmk can contain backslash-r (CR) characters
JDK-8257856 Make robust to JDK version updates
JDK-8276880 Remove java/lang/RuntimeTests/exec/ExecWithDir as unnecessary
JDK-8303476 Add the runtime version in the release file of a JDK image
JDK-8303861 Error handling step timeouts should never be blocked by OnError and others
JDK-8305400 ISO 4217 Amendment 175 Update
JDK-8297450 fails when run with -show parameter
JDK-8287897 Augment src/jdk.internal.le/share/legal/ with information on 4th party dependencies
JDK-8286398 Address possibly lossy conversions in jdk.internal.le
JDK-8298887 On the latest macOS+XCode the Robot API may report wrong colors
JDK-8303564 C2: "Bad graph detected in build_loop_late" after a CMove is wrongly split thru phi
JDK-8283059 Uninitialized warning in check_code.c with GCC 11.2
JDK-8289735 UTIL_LOOKUP_PROGS fails on pathes with space
JDK-8306976 UTIL_REQUIRE_SPECIAL warning on grep
JDK-8268558 [TESTBUG] Case 2 in TestP11KeyFactoryGetRSAKeySpec is skipped
JDK-8306768 CodeCache Analytics reports wrong threshold
JDK-8306664 GHA: Update MSVC version to latest stepping
JDK-8306658 GHA: MSVC installation could be optional since it might already be pre-installed
JDK-8213531 Test javax/swing/border/ fails
JDK-8215015 [TESTBUG] remove unneeded -Xfuture option from tests
JDK-8214459 NSS source should be removed
JDK-8171426 java/lang/ProcessBuilder/ failed with Stream closed
JDK-8187522 test/sun/net/ftp/ timed out
JDK-8209546 Make sun/security/tools/keytool/ to support macosx
JDK-8209167 Use CLDR's time zone mappings for Windows
JDK-8306543 GHA: MSVC installation is failing
JDK-8304134 jib bootstrapper fails to quote filename when checking download filetype
JDK-8303482 Update LCMS to 2.15
JDK-8302151 BMPImageReader throws an exception reading BMP images
JDK-8178806 Better exception logging in crypto code
JDK-8277775 Fixup bugids in - add 4357905
JDK-8305113 (tz) Update Timezone Data to 2023c
JDK-8297000 [jib] Add more friendly warning for proxy issues
JDK-8294906 Memory leak in PKCS11 NSS TLS server
JDK-8300490 Spaces in name of MacOS Code Signing Identity are not correctly handled after JDK-8293550
JDK-8305711 Arm: C2 always enters slowpath for monitorexit
JDK-8305721 add `make compile-commands` artifacts to .gitignore
JDK-8274864 Remove Amman/Cairo hacks in ZoneInfoFile
JDK-8305528 [11u] Backport of JDK-8259530 breaks build with JDK10 bootstrap VM
JDK-8259530 Generated docs contain MIT/GPL-licenced works without reproducing the licence
JDK-8291638 Keep-Alive timeout of 0 should close connection immediately
JDK-8275721 Name of UTC timezone in a locale changes depending on previous code
JDK-8291226 Create Test Cases to cover scenarios for JDK-8278067
JDK-8291637 HttpClient default keep alive timeout not followed if server sends invalid value
JDK-8303102 jcmd: ManagementAgent.status truncates the text longer than O_BUFLEN
JDK-8227257 javax/swing/JFileChooser/4847375/ fails with AssertionError
JDK-8301170 perfMemory_windows.cpp add free_security_attr to early returns
JDK-8215575 C2 crash: assert(get_instanceKlass()->is_loaded()) failed: must be at least loaded
JDK-8300205 Swing test bug8078268 make latch timeout configurable
JDK-8302791 Add specific ClassLoader object to Proxy IllegalArgumentException message
JDK-8232853 AuthenticationFilter.Cache::remove may throw ConcurrentModificationException
JDK-8265486 ProblemList javax/sound/midi/Sequencer/ on macosx-aarch64
JDK-8294548 Problem list SA core file tests on macosx-x64 due to JDK-8294316
JDK-8263420 Incorrect function name in NSAccessibilityStaticText native peer implementation
JDK-8264304 Create implementation for NSAccessibilityToolbar protocol peer
JDK-8264290 Create implementation for NSAccessibilityComponentGroup protocol peer
JDK-8220093 Change to GCC 8.2 for building on Linux at Oracle
JDK-8303937 Corrupted heap dumps due to missing retries for os::write()
JDK-8303440 The "ZonedDateTime.parse" may not accept the "UTC+XX" zone id
JDK-8293232 Fix race condition in pkcs11 SessionManager
JDK-8282600 SSLSocketImpl should not use user_canceled workaround when not necessary
JDK-8280703 CipherCore.doFinal(...) causes potentially massive byte[] allocations during decryption
JDK-8289301 P11Cipher should not throw out of bounds exception during padding
JDK-8293815 P11PSSSignature.engineUpdate should not print debug messages during normal operation
JDK-8303432 Bump update version for OpenJDK: jdk-11.0.20
JDK-8301009 Update libxml2 to 2.10.3
JDK-8304751 Improve pipeline layout
JDK-8306115 Update libxml2 to 2.10.4
JDK-8307641 Change JavaFX release version to 11.0.20 in jfx11u