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Vulnerability record · CVE-2018-15687 · published 26 October 2018

CVE-2018-15687: Canonical ubuntu linux race condition vulnerability

Canonical · Ubuntu Linux

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

7.0 CVSS 3.1 High EPSS 1.1% · top 36.7% CWE-362 · Race condition
7.0CVSS 3.1 base score, v2 6.9
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105748 Broken LinkThird Party AdvisoryVDB Entry
https://github.com/systemd/systemd/pull/10517/commits PatchThird Party Advisory
https://security.gentoo.org/glsa/201810-10 Third Party Advisory
https://usn.ubuntu.com/3816-1/ Third Party Advisory
https://www.exploit-db.com/exploits/45715/ ExploitThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/105748 Broken LinkThird Party AdvisoryVDB Entry
https://github.com/systemd/systemd/pull/10517/commits PatchThird Party Advisory
https://security.gentoo.org/glsa/201810-10 Third Party Advisory
https://usn.ubuntu.com/3816-1/ Third Party Advisory
https://www.exploit-db.com/exploits/45715/ ExploitThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2018-15687), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.