[3.13] gh-119451: Fix a potential denial of service in http.client (GH-119454) (...
authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Fri, 5 Dec 2025 15:21:57 +0000 (16:21 +0100)
committerArnaud Rebillout <arnaudr@debian.org>
Thu, 14 May 2026 03:00:00 +0000 (10:00 +0700)
commit13c5d1b9a3e66cc2771936999e3f282acb38e012
tree70f8eafe7eb7f1cdb167155e7014a363135be4fa
parent983c79af57d1326749ec7b53393a141fa6617980
[3.13] gh-119451: Fix a potential denial of service in http.client (GH-119454) (#142139)

gh-119451: Fix a potential denial of service in http.client (GH-119454)

Reading the whole body of the HTTP response could cause OOM if
the Content-Length value is too large even if the server does not send
a large amount of data. Now the HTTP client reads large data by chunks,
therefore the amount of consumed memory is proportional to the amount
of sent data.
(cherry picked from commit 5a4c4a033a4a54481be6870aa1896fad732555b5)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Origin: upstream, https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a15

Gbp-Pq: Name CVE-2025-13836.patch
Lib/http/client.py
Lib/test/test_httplib.py
Misc/NEWS.d/next/Security/2024-05-23-11-47-48.gh-issue-119451.qkJe9-.rst [new file with mode: 0644]