CVE-2018-16864: canonical ubuntu_linux
Vulnerability summary
CVE-2018-16864 is a high (CVSS 7.8) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 53.6% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 16 · Related 9Timeline
- 11-01-2019PublishedVulnerability first disclosed.
- 09-06-2025Last modifiedVulnerability information updated.
Description
An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when a program with long command line arguments calls syslog. A local attacker may use this flaw to crash systemd-journald or escalate his privileges. Versions through v240 are vulnerable.
CVSS metrics
8 scores · 5 sources · 3 versions- 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
- NVDNIST7.4HighCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.71%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.71% 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
1 foundExploit Reference (qualys.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- enterprise_linux_desktop7.0
- enterprise_linux_server7.0 | 7.4 | 7.5 | 7.6
- enterprise_linux_server_aus7.3 | 7.6
- enterprise_linux_server_eus7.4 | 7.6
- enterprise_linux_server_tus7.3 | 7.6
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< 240-4
- debian_linuxEOL8.0 | 9.0
Oracle2 products
- communications_session_border_controller8.0.0 | 8.1.0 | 8.2.0
- enterprise_communications_broker3.0.0 | 3.1.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 18.10
Systemd_project1 product
- systemd≤ 240
The systemd project1 product
- systemd≤ v240
Ubuntu1 product
- systemd< 229-4ubuntu21.15 | < 237-3ubuntu10.11
8 vendors · 19 products
References
22 links- access.redhat.com/errata/RHSA-2019:0342Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
lists.debian.org/debian-lts-announce/2019/01/msg00016.htmlMailing ListX Refsource MLISTThird Party AdvisoryAdvisory- access.redhat.com/errata/RHSA-2019:0204Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16864X Refsource CONFIRMIssue TrackingPatchThird Party AdvisoryFIX
- www.qualys.com/2019/01/09/system-down/system-down.txtX Refsource MISCExploitThird Party AdvisoryEVIDENCE
- access.redhat.com/errata/RHSA-2019:0049Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
Show all 22 references
- access.redhat.com/errata/RHSA-2019:0271Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- access.redhat.com/errata/RHSA-2019:0361Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlX Refsource MISCPatchThird Party AdvisoryFIX
- access.redhat.com/errata/RHBA-2019:0327Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- access.redhat.com/errata/RHSA-2019:2402Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
