Race condition in Red Hat systemd
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | systemd | before 234 | 234 | Patch available | CNA |
- systemd VendorRed Hat Affected before 234 Fixed in 234 Patch available CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* | before 234 | Vulnerable | systemd |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_aus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_aus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
- cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* Versions before 234 Vulnerable ·systemd
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
Remediation
Red Hat 1 advisory
- RHSA-2018:0260 Released 2018-01-31 · Red Hat rating Moderatesystemd security update
- Red Hat Enterprise Linux Client (v. 7) libgudev1-219-42.el7_4.7, systemd-219-42.el7_4.7, systemd-libs-219-42.el7_4.7 +2
- Red Hat Enterprise Linux Client Optional (v. 7) libgudev1-devel-219-42.el7_4.7, systemd-devel-219-42.el7_4.7, systemd-journal-gateway-219-42.el7_4.7 +2
- Red Hat Enterprise Linux ComputeNode (v. 7) libgudev1-219-42.el7_4.7, systemd-219-42.el7_4.7, systemd-libs-219-42.el7_4.7 +2
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libgudev1-devel-219-42.el7_4.7, systemd-devel-219-42.el7_4.7, systemd-journal-gateway-219-42.el7_4.7 +2
- Red Hat Enterprise Linux Server (v. 7) libgudev1-219-42.el7_4.7, libgudev1-219-42.el7_4.7.ppc, libgudev1-devel-219-42.el7_4.7 +8
- Red Hat Enterprise Linux Server Optional (v. 7) systemd-journal-gateway-219-42.el7_4.7, systemd-networkd-219-42.el7_4.7, systemd-resolved-219-42.el7_4.7 +1
- Red Hat Enterprise Linux Workstation (v. 7) libgudev1-219-42.el7_4.7, libgudev1-devel-219-42.el7_4.7, systemd-219-42.el7_4.7 +4
- Red Hat Enterprise Linux Workstation Optional (v. 7) systemd-journal-gateway-219-42.el7_4.7, systemd-networkd-219-42.el7_4.7, systemd-resolved-219-42.el7_4.7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) libgudev1-219-42.el7_4.7, libgudev1-devel-219-42.el7_4.7, systemd-219-42.el7_4.7 +4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) systemd-journal-gateway-219-42.el7_4.7, systemd-networkd-219-42.el7_4.7, systemd-resolved-219-42.el7_4.7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0260 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0260 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1049
- 2026-10-03 Alias added: GHSA-4pg2-ppcx-jh29
References
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Sources
- CVE-2018-1049 · CVE Program
- CVE-2018-1049 · NVD
- FIRST EPSS
- GHSA-4pg2-ppcx-jh29 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-1049 · Red Hat security data · CC BY 4.0
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