A use-after-free exists in Python through 3.9 via heappushpop in heapq.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://bugs.python.org/issue39421 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://bugs.python.org/issue39421 Exploit, Issue Tracking, Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · python, debianNVD modified 2026-10-14 19:16
Affected (CPE criteria) 4
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*cpe:2.3:a:python:python:3.9.0:alpha1:*:*:*:*:*:*cpe:2.3:a:python:python:3.9.0:alpha2:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References 15
- https://bugs.python.org/issue39421 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZ5OOBWNYWXFTZDMCGHJVGDLDTHLWITJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VO7Y2YZSDK3UYJD2KBGLXRTGNG6T326J/
- https://security.netapp.com/advisory/ntap-20230929-0008/
- https://bugs.python.org/issue39421 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZ5OOBWNYWXFTZDMCGHJVGDLDTHLWITJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VO7Y2YZSDK3UYJD2KBGLXRTGNG6T326J/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/JZ5OOBWNYWXFTZDMCGHJVGDLDTHLWITJ/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/VO7Y2YZSDK3UYJD2KBGLXRTGNG6T326J/
- https://security.netapp.com/advisory/ntap-20230929-0008/
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html