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gh-153578: Fix out-of-bounds write in bytearray.extend() with a reentrant __buffer__ - #153579

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serhiy-storchaka merged 2 commits into
python:mainfrom
tonghuaroot:extend-reentrant-buffer-oob
Aug 18, 2026
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gh-153578: Fix out-of-bounds write in bytearray.extend() with a reentrant __buffer__#153579
serhiy-storchaka merged 2 commits into
python:mainfrom
tonghuaroot:extend-reentrant-buffer-oob

Frame the NEWS as a concurrency issue and add the grow-during-__buffe…

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