What’s Vulnerable › Vulnerabilities

CVE-2018-1049

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-16 · updated 2026-06-17
• Weakness: CWE-362

Description

In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serviced by systemd resulting in kernel holding the mountpoint and any processes that try to use said mount will hang. A race condition like this may lead to denial of service, until mount points are unmounted.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04
• Debian Linux: 8.0
• Red Hat Enterprise Linux: 7.0
• RedHat Enterprise Linux Aus: 7.4, 7.6
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Server Aus: 7.4, 7.6
• RedHat Enterprise Linux Server Eus: 7.4, 7.5, 7.6
• RedHat Enterprise Linux Server Tus: 7.4, 7.6
• RedHat Enterprise Linux Workstation: 7.0
• systemd: before 234 — fixed in 234

How to fix

Upgrade to a fixed version: systemd 234. Check the vendor advisory for mitigations.

References

• http://www.securitytracker.com/id/1041520
• https://access.redhat.com/errata/RHSA-2018:0260
• https://bugzilla.redhat.com/show_bug.cgi?id=1534701
• https://lists.debian.org/debian-lts-announce/2018/11/msg00017.html
• https://usn.ubuntu.com/3558-1/
• http://www.securitytracker.com/id/1041520
• https://access.redhat.com/errata/RHSA-2018:0260
• https://bugzilla.redhat.com/show_bug.cgi?id=1534701
• https://lists.debian.org/debian-lts-announce/2018/11/msg00017.html
• https://usn.ubuntu.com/3558-1/

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