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[3.11] gh-120384: gh-120298: Fix array-out-of-bounds & use after free list - #121345
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pythonGH-120442) (python#120825) pythongh-120384: Fix array-out-of-bounds crash in `list_ass_subscript` (pythonGH-120442) (cherry picked from commit 8334a1b) Co-authored-by: Nikita Sobolev <[email protected]>
This backports the fix to python#120298. commit id b884536
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For consideration as a security related backport. To trigger these, people already need the ability to run arbitrary Python code. So we don't consider this a vulnerability given the existing capabilities. But it could make the life of some projects built on top of Python a little better. Such projects are already on undefined behavior grounds if they consider anything executing Python bytecode to not be able to escape that to begin with. Because CPython does not guarantee any such thing. |
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August 17, 2025 18:28
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needs backport to 3.9
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🤖 New build scheduled with the buildbot fleet by @gpshead for commit de70708 🤖 Results will be shown at: https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F121345%2Fmerge If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again. |
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…e after free `list` (pythonGH-121345) (cherry picked from commit 8334a1b) (cherry picked from commit 0cd888b) Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Nikita Sobolev <[email protected]> Co-authored-by: Łukasz Langa <[email protected]>
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…e after free `list` (pythonGH-121345) (cherry picked from commit 8334a1b) (cherry picked from commit 0cd888b) Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Nikita Sobolev <[email protected]> Co-authored-by: Łukasz Langa <[email protected]>
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GH-140833 is a backport of this pull request to the 3.10 branch. |
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GH-140834 is a backport of this pull request to the 3.9 branch. |
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… `list` (GH-121345) (GH-140833) (cherry picked from commit 8334a1b) (cherry picked from commit 0cd888b) Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Nikita Sobolev <[email protected]> Co-authored-by: Łukasz Langa <[email protected]>
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…`list` (GH-121345) (GH-140834) (cherry picked from commit 8334a1b) (cherry picked from commit 0cd888b) Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Nikita Sobolev <[email protected]> Co-authored-by: Łukasz Langa <[email protected]>
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… after free `list` (pythonGH-121345) (pythonGH-140834) (cherry picked from commit 8334a1b) (cherry picked from commit 0cd888b) Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Nikita Sobolev <[email protected]> Co-authored-by: Łukasz Langa <[email protected]> (cherry picked from commit 42762bb) 3.7.17.x: test_list.py conflicted only because 3.7 has no test_preallocation test; just the two new tests are added.
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gh-120384: Fix array-out-of-bounds crash in
list_ass_subscript(GH-120442) (cherry picked from commit 8334a1b in the 3.12 branch)gh-120298: Fix use after free in
list_richcompare.