]> 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 22:28:38 +0000 (15:28 -0700)
committerPablo Galindo <pablogsal@gmail.com>
Mon, 24 Oct 2022 15:45:40 +0000 (16:45 +0100)
commit38ade0d2aca25748207189b17323874cad183f78
treecea8d0e8ed67326a7b859990326b910454cba752
parent9c80b55ad69f67e3507c0185e07b98af35dc7239
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