Stack buffer overflow in bz2 when reusing BZ2Decompressor after error

[StanFromIreland]

Crash report

What happened?

More details to follow.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Output from running 'python -VV' on the command line:

No response

Linked PRs

• gh-150599: Prevent bz2 decompressor reuse after errors #150600
• [3.15] gh-150599: Prevent bz2 decompressor reuse after errors (GH-150600) #151045
• [3.14] gh-150599: Prevent bz2 decompressor reuse after errors (#150600) #151054
• [3.13] gh-150599: Prevent bz2 decompressor reuse after errors (GH-150600) #151055
• [3.12] gh-150599: Prevent bz2 decompressor reuse after errors (#150600) #151057