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JDK 16.0.1 Release Notes

Java Development Kit 16 Release Notes

Java™ SE Development Kit 16.0.1 (JDK 16.0.1)

April 20, 2021

The full version string for this update release is 16.0.1+9 (where "+" means "build"). The version number is 16.0.1.

IANA TZ Data 2020e, 2020f, 2021a

JDK 16.0.1 contains IANA time zone data 2020e, 2020f, 2021a.

  • * Volgograd switches to Moscow time on 2020-12-27 at 02:00.
  • * South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

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

Security Baselines

The security baselines for the Java Runtime Environment (JRE) at the time of the release of JDK 16.0.1 are specified in the following table:

JRE Family Version JRE Security Baseline (Full Version String)
16 16.0.1+9
11 11.0.11+9
8 8u291-b10
7 7u301-b09

 

Keeping the JDK up to Date

Oracle recommends that the JDK is updated with each Critical Patch Update (CPU). 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 16.0.1) be used after the next critical patch update scheduled for July 20, 2021.

Other Notes

 

core-libs/javax.naming
 New System and Security Properties to Control Reconstruction of Remote Objects by JDK's Built-in JNDI RMI and LDAP Implementations

jdk.jndi.object.factoriesFilter: This system and security property allows a serial filter to be specified that controls the set of object factory classes permitted to instantiate objects from object references returned by naming/directory systems. The factory class named by the reference instance is matched against this filter during remote reference reconstruction. The filter property supports pattern-based filter syntax with the format specified by JEP 290. This property applies both to the JNDI/RMI and the JNDI/LDAP built-in provider implementations. The default value allows any object factory class specified in the reference to recreate the referenced object.

com.sun.jndi.ldap.object.trustSerialData: This system property allows control of the deserialization of java objects from the javaSerializedData LDAP attribute. To prevent deserialization of java objects from the attribute, the system property can be set to false value. By default, deserialization of java objects from the javaSerializedData attribute is allowed.

JDK-8244473 (not public)

 

security-libs/java.security
 Added 2 HARICA Root CA Certificates

The following root certificates have been added to the cacerts truststore:

+ HARICA
  + haricarootca2015
    DN: CN=Hellenic Academic and Research Institutions RootCA 2015, O=Hellenic Academic and Research Institutions Cert. Authority, L=Athens, C=GR

  + haricaeccrootca2015
    DN: CN=Hellenic Academic and Research Institutions ECC RootCA 2015, O=Hellenic Academic and Research Institutions Cert. Authority, L=Athens, C=GR
See JDK-8256421

 

core-libs/java.lang
 Less Ambiguous Processing of ProcessBuilder Quotes on Windows

In the java.lang.ProcessBuilder implementation on Windows, the system property jdk.lang.Process.allowAmbiguousCommands=false ensures, for each argument, that double-quotes are properly encoded in the command string passed to Windows CreateProcess. An argument with a final trailing double-quote preceded by a backslash is encoded as a literal double-quote; previously, the argument including the double-quote would be joined with the next argument. An empty argument is encoded as a pair of double-quotes ("") resulting in a zero length string passed for the argument to the process; previously, it was silently ignored. An argument containing double-quotes, other than first and last, is encoded to preserve the double-quotes when passed to the process; previously, the embedded double-quotes would be dropped and not passed to the process. If a security manager is set, such as in WebStart applications, double-quotes are encoded as described. When there is no security manager, there is no change to existing behavior; the jdk.lang.Process.allowAmbiguousCommands property can be set to true: jdk.lang.Process.allowAmbiguousCommands=true or false. If left unset, it is the same as setting it to true.

JDK-8250568 (not public)

Bug Fixes

This release also contains fixes for security vulnerabilities described in the Oracle Critical Patch Update. For a more complete list of the bug fixes included in this release, see the JDK 16.0.1 Bug Fixes page.