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Posted to dev@directory.apache.org by "Emmanuel Lécharny (Jira)" <ji...@apache.org> on 2026/09/29 07:25:00 UTC

[jira] [Commented] (DIRAPI-452) Unbounded mutual recursion in ACI refinement parsing (StackOverflowError)

    [ https://issues.apache.org/jira/browse/DIRAPI-452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18120623#comment-18120623 ] 

Emmanuel Lécharny commented on DIRAPI-452:
------------------------------------------

Found by Claude

> Unbounded mutual recursion in ACI refinement parsing (StackOverflowError)
> -------------------------------------------------------------------------
>
>                 Key: DIRAPI-452
>                 URL: https://issues.apache.org/jira/browse/DIRAPI-452
>             Project: Directory Client API
>          Issue Type: Bug
>    Affects Versions: 2.1.8
>            Reporter: Emmanuel Lécharny
>            Priority: Major
>             Fix For: 2.1.9
>
>
> An authenticated principal with permission to write an _ACI_-syntax value submits an _ACIItem_ whose classes refinement is '_not: not: not: ..._' repeated ~20k times.
> The syntax checker invokes _check()_, the parser recurses ~40k frames, and _StackOverflowError_ unwinds through the schema-validation path, aborting the operation and destabilizing the worker thread.



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