[3.13] gh-143308: fix UAF when PickleBuffer is concurrently mutated in a callback (GH-143312) #143397
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… a callback (pythonGH-143312) (cherry picked from commit 6c53af1) Co-authored-by: Aaron Wieczorek <aaronw@fastmail.com> Co-authored-by: Aaron Wieczorek <woz@Aarons-MacBook-Pro.local> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
This was referenced Jan 3, 2026
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(cherry picked from commit 6c53af1)
Co-authored-by: Aaron Wieczorek aaronw@fastmail.com
Co-authored-by: Aaron Wieczorek woz@Aarons-MacBook-Pro.local
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
save_picklebuffervia re-entrantbuffer_callbackand__bool__#143308