]> git.ipfire.org Git - thirdparty/Python/cpython.git/commit
[3.8] gh-97616: list_resize() checks for integer overflow (GH-97617) (GH-97628)
authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Tue, 4 Oct 2022 17:08:24 +0000 (10:08 -0700)
committerGitHub <noreply@github.com>
Tue, 4 Oct 2022 17:08:24 +0000 (10:08 -0700)
commitf9ce9d4684cc293f40171af8fde253e4762baf9d
treeae03e83b33a40fc44636ae5d4d3a04f60f053470
parent90620490c04b6894d5a3f4214ecf5a10b41d25ec
[3.8] gh-97616: list_resize() checks for integer overflow (GH-97617) (GH-97628)

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