]> git.ipfire.org Git - thirdparty/Python/cpython.git/commit
gh-97616: list_resize() checks for integer overflow (GH-97617)
authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Wed, 28 Sep 2022 23:03:39 +0000 (16:03 -0700)
committerGitHub <noreply@github.com>
Wed, 28 Sep 2022 23:03:39 +0000 (16:03 -0700)
commit28f1435d94e72a1fadec2e3d94eac300bb386c2e
treeaa2bf1439efe09edfaafb8d9f0e514fc373f816b
parent3d8dfb339b0c0696c5efd4effa9a6b1e34d814e1
gh-97616: list_resize() checks for integer overflow (GH-97617)

Fix multiplying a list by an integer (list *= int): detect the
integer overflow when the new allocated length is close to the
maximum size.  Issue reported by Jordan Limor.

list_resize() now checks for integer overflow before multiplying the
new allocated length by the list item size (sizeof(PyObject*)).
(cherry picked from commit a5f092f3c469b674b8d9ccbd4e4377230c9ac7cf)

Co-authored-by: Victor Stinner <vstinner@python.org>
Lib/test/test_list.py
Misc/NEWS.d/next/Security/2022-09-28-17-09-37.gh-issue-97616.K1e3Xs.rst [new file with mode: 0644]
Objects/listobject.c