[jira] [Assigned] (AVRO-4285) [c++] Enforce a maximum decompressed block size

["Ismaël Mejía (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-4285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismaël Mejía reassigned AVRO-4285:
----------------------------------

    Assignee: Ismaël Mejía

> [c++] Enforce a maximum decompressed block size
> -----------------------------------------------
>
>                 Key: AVRO-4285
>                 URL: https://issues.apache.org/jira/browse/AVRO-4285
>             Project: Apache Avro
>          Issue Type: Sub-task
>          Components: c++
>    Affects Versions: 1.11.5, 1.12.1
>            Reporter: Ismaël Mejía
>            Assignee: Ismaël Mejía
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.12.2
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> {{DataFileReaderBase::readDataBlock()}} in {{lang/c++/impl/DataFile.cc}} decompresses deflate/snappy blocks into a buffer that grows without an upper bound, and {{lang/c++/impl/ZstdDecompressWrapper.cc}} trusts the zstd frame content size. The existing {{BoundedInputStream}} bounds only the compressed input, not the decompressed output.
> Enforce a configurable maximum decompressed size across the codecs before/while growing the output buffer, and fail decoding with a clear error when exceeded. Add a test with a high-ratio block.



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