On Wed, 30 Jul 2025 20:20:33 GMT, Weibing Xiao <wx...@openjdk.org> wrote:

> [webrev.zip](https://github.com/user-attachments/files/21517501/webrev.zip)
> NPE thrown from SASL GSSAPI impl on Java 11+ when TLS is used with QOP 
> auth-int against Active Directory.
> 
> When the exception is triggered, LDAP Connection will do "clean-up" operation 
> and output stream get flushed and closed the context while GssKrb5Client is 
> still wrapping the message and SaslOuput Stream is writing the content of the 
> buffer; and at the time GSSContext is disposed and it is null. That's the 
> reason to throw NPE.
> 
> 1) Check if the context is null or not; then wrap the NPE. The change is done 
> in GssKrb5Base.java
> 
> No test file is attached for this MR since it needs Sasl LDAP server with 
> security setup. Attached webrev for the reference.

The failure only happened when Sasl.QOP set with the value of auth-int or 
auth-conf. It needs a ldap server with the setting of SASL authentication. It 
is not available in OpenJDK community.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/26566#issuecomment-3206844337

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