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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | systemd | prior to 234 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | systemd | 234-1 | — |
| Debian 13 | systemd | 234-1 | — |
| Debian 12 | systemd | 234-1 | — |
| Debian 8 | systemd | 215-17+deb8u8 | DLA-1580-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | systemd | 229-4ubuntu21.1 | USN-3558-1 |
| Ubuntu 14.04 LTS | systemd | 204-5ubuntu20.26 | USN-3558-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | systemd +9 | 219-42.el7_4.7 | RHSA-2018:0260 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | systemd | 228-150.29.1 | SUSE-SU-2018:0299-1 |
| SLES 12 SP2 | systemd | 228-150.29.1 | SUSE-SU-2018:0299-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | systemd | 228-150.29.1 | SUSE-SU-2018:0299-1 |
| SLES for SAP 12 SP2 | systemd | 228-150.29.1 | SUSE-SU-2018:0299-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | systemd +9 | 219-42.amzn2.7 | ALAS2-2018-961 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | systemd +9 | 219-42.0.2.el7_4.7 | ELSA-2018-0260 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
lukehebe/CVE-2018-1049-POC ★ 0 · Jul 11, 2025
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 6
- RHSA-2018:0260 Red Hat Security Advisory: systemd security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3558-1 systemd vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1580-1 systemd - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:0299-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2018-961 Moderate: systemd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 21, 2018
- ELSA-2018-0260 Moderate: systemd security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 31, 2018
References
- 1041520 vdb-entry
- [debian-lts-announce] 20181119 [SECURITY] [DLA 1580-1] systemd security update mailing-list
- RHSA-2018:0260 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1534701
- USN-3558-1 vendor-advisory