For more information, refer to Timezone Data Versions in the JRE Software.

Oracle recommends that the JDK is updated with each Critical Patch Update. In order to determine if a release is the latest, the Security Baseline page can be used to determine which is the latest version for each release family.

Critical patch updates, which contain security vulnerability fixes, are announced one year in advance on Critical Patch Updates, Security Alerts and Bulletins. It is not recommended that this JDK (version 11.0.16.1) be used after the next critical patch update scheduled for October 18, 2022.

Oracle recommends that all JDK 11 users, even those that have already updated to 11.0.16, uptake the 11.0.16.1 patch release.

➜ C2 Compilation Errors Unpredictably Crashes JVM

Fixes a regression in the C2 JIT compiler which caused the Java Runtime to crash unpredictably.

For more information, refer to Timezone Data Versions in the JRE Software.

Oracle recommends that the JDK is updated with each Critical Patch Update. In order to determine if a release is the latest, the Security Baseline page can be used to determine which is the latest version for each release family.

Critical patch updates, which contain security vulnerability fixes, are announced one year in advance on Critical Patch Updates, Security Alerts and Bulletins. It is not recommended that this JDK (version 11.0.16) be used after the next critical patch update scheduled for October 18, 2022.

➜ HTTPS Channel Binding Support for Java GSS/Kerberos

Support has been added for TLS channel binding tokens for Negotiate/Kerberos authentication over HTTPS through javax.net.HttpsURLConnection.

Channel binding tokens are increasingly required as an enhanced form of security which can mitigate certain kinds of socially engineered, man in the middle (MITM) attacks. They work by communicating from a client to a server the client's understanding of the binding between connection security (as represented by a TLS server cert) and higher level authentication credentials (such as a username and password). The server can then detect if the client has been fooled by a MITM and shutdown the session/connection.

The feature is controlled through a new system property jdk.https.negotiate.cbt which is described fully on the Networking Properties page.

➜ Update java.net.InetAddress to Detect Ambiguous IPv4 Address Literals

The java.net.InetAddress class has been updated to strictly accept IPv4 address literals in decimal quad notation. The InetAddress class methods are updated to throw an java.net.UnknownHostException for invalid IPv4 address literals. To disable this check, the new "jdk.net.allowAmbiguousIPAddressLiterals" system property can be set to "true".

➜ JDK Bundle Extensions Truncated When Downloading Using Firefox 102

On oracle.com and java.com, certain JDK bundle extensions are getting truncated on download when using Firefox version 102. The downloaded bundles have no file extension like ".exe", ".rpm", ".deb". If you are not able to upgrade to Firefox ESR 102.0.1 or Firefox 103 when it is released, then as a workaround you can:

• manually add a file extension to the file name after download.
• use a different browser

➜ Vector Should Throw ClassNotFoundException for a Missing Class of an Element

java.util.Vector is updated to correctly report ClassNotFoundException that occurs during deserialization using java.io.ObjectInputStream.GetField.get(name, object)when the class of an element of the Vector is not found. Without this fix, a StreamCorruptedException is thrown that does not provide information about the missing class.

➜ Default JDK Compressor Will Be Closed when IOException Is Encountered

DeflaterOutputStream.close() and GZIPOutputStream.finish() methods have been modified to close out the associated default JDK compressor before propagating a Throwable up the stack. ZIPOutputStream.closeEntry() method has been modified to close out the associated default JDK compressor before propagating an IOException, not of type ZipException, up the stack.