GeezerVison is showing github.com — [3.11] gh-106092: Fix use-after-free crash in frame_dealloc (GH-106875) by miss-islington · Pull Request #107533 · python/cpython
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miss-islington
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Aug 1, 2023
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edited by bedevere-bot
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It was possible for the trashcan to delay the deallocation of a
PyFrameObject until after its corresponding _PyInterpreterFrame has
already been freed. So frame_dealloc needs to avoid dereferencing the
f_frame pointer unless it first checks that the pointer still points
to the interpreter frame within the frame object.
(cherry picked from commit 557b05c)
Co-authored-by: Anders Kaseorg [email protected]
Signed-off-by: Anders Kaseorg [email protected]
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…106875)
It was possible for the trashcan to delay the deallocation of a
PyFrameObject until after its corresponding _PyInterpreterFrame has
already been freed. So frame_dealloc needs to avoid dereferencing the
f_frame pointer unless it first checks that the pointer still points
to the interpreter frame within the frame object.
(cherry picked from commit 557b05c)
Co-authored-by: Anders Kaseorg <[email protected]>
Signed-off-by: Anders Kaseorg <[email protected]>
This was referenced Aug 1, 2023
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