CVE-2020-1712: debian debian_linux Use After Free
Vulnerability summary
CVE-2020-1712 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.6% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 31-03-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
7 scores · 6 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.46% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat21 products
Suse19 products
- systemd&distro=HPE Helion OpenStack 8< 228-150.82.1
- systemd&distro=SUSE Enterprise Storage 5< 228-150.82.1
- systemd&distro=SUSE Linux Enterprise Desktop 12 SP4< 228-150.82.1
- systemd&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 234-24.46.1
- systemd&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 228-150.82.1
Chainguard5 products
- py3-systemdAll versions (No fix recorded)
- py3.10-systemdAll versions (No fix recorded)
- py3.11-systemdAll versions (No fix recorded)
- py3.12-systemdAll versions (No fix recorded)
- py3.13-systemdAll versions (No fix recorded)
Debian2 products
- systemd< 232-25+deb9u14 | < 244.2-1
- debian_linuxEOL9.0
[unknown]1 product
- systemd< v245-rc1
Systemd_project1 product
- systemd≤ 244
Ubuntu1 product
- systemdAll versions (No fix recorded) | < 229-4ubuntu21.27 | < 237-3ubuntu10.38 | < 244.1-0ubuntu3
7 vendors · 50 products
References
41 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712X Refsource CONFIRMFIXIssue TrackingPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2020/02/05/1X Refsource CONFIRMFIXMailing ListPatchThird Party Advisory
- github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2X Refsource CONFIRMFIXPatchThird Party Advisory
- github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54X Refsource CONFIRMFIXPatchThird Party Advisory
- github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abbX Refsource CONFIRMFIXPatchThird Party Advisory
- github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2dX Refsource CONFIRMFIXPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2022/06/msg00025.htmlMailing ListX Refsource MLISTAdvisoryThird Party Advisory
