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[3.15] gh-150599: Prevent bz2 decompressor reuse after errors (GH-150600)

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(cherry picked from commit 5755d0f083)

Co-authored-by: Stan Ulbrych <stan@python.org>
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Miss Islington (bot) 2026-06-07 18:48:30 +02:00 • committed by GitHub
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Fix a possible stack buffer overflow in :mod:`bz2` when a
:class:`bz2.BZ2Decompressor` is reused after a decompression error.
The decompressor now becomes unusable after libbz2 reports an error.