A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.
Fix
Public exploits 1
- davidajagbe/Vulnerability-assessment PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 12
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 Patch, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 Patch, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing List, Patch, Third Party 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 7.8 · systemd_project, redhat, debianNVD modified 2026-10-14 09:17
Affected (CPE criteria) 7
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:discovery:-:*:*:*:*:*:*:*cpe:2.3:a:redhat:migration_toolkit:1.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
References 15
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d Patch, Third Party Advisory
- https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing List, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html