In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serv
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.
- Published
- Feb 16, 2018
- Updated
- Jun 16, 2026
- EPSS
- 7.4% · 94th percentile
- CWE
- CWE-362
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Report tools
Action score
25
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.4%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| systemd project | systemd | cpe:2.3:a:systemd_project:systemd |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux aus | cpe:2.3:o:redhat:enterprise_linux_aus |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
| redhat | enterprise linux server tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- debian debian linux8.0
- redhat enterprise linux7.0
- redhat enterprise linux aus7.4
- redhat enterprise linux aus7.6
- redhat enterprise linux desktop7.0
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.4
- redhat enterprise linux server aus7.6
- redhat enterprise linux server eus7.4
- redhat enterprise linux server eus7.5
- redhat enterprise linux server eus7.6
- redhat enterprise linux server tus7.4
- redhat enterprise linux server tus7.6
- redhat enterprise linux workstation7.0
- systemd project systemdbefore 234
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
Red Hat, Inc. systemd
- prior to 234affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | systemd | before 234-1 | 234-1 |
| Debian:8 | systemd | before 215-17+deb8u8 | 215-17+deb8u8 |
| Red Hat:enterprise_linux:7::client | libgudev1 | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | libgudev1-devel | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-debuginfo | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-devel | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-journal-gateway | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-libs | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-networkd | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-python | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-resolved | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| Red Hat:enterprise_linux:7::client | systemd-sysv | before 0:219-42.el7_4.7 | 0:219-42.el7_4.7 |
| SUSE:Linux Enterprise Desktop 12 SP2 | systemd | before 228-150.29.1 | 228-150.29.1 |
Same product
systemd project: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-9445In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small.46Plan
- CVE-2018-21029systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS.40Plan
- CVE-2015-7510Stack-based buffer overflow in the getpwnam and getgrnam functions of the NSS module nss-mymachines in systemd.40Plan
- CVE-2017-1000082systemd v233 and earlier fails to safely parse usernames starting with a numeric digit (e.g.40Plan
- CVE-2022-2526A use-after-free vulnerability was found in systemd.39Monitor
- CVE-2017-15908In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in th37Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:systemd | 234-1 · Debian:12 | Package registry (OSV) |
| red hat:libgudev1 | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:libgudev1-devel | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-debuginfo | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-devel | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-journal-gateway | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-libs | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-networkd | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-python | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-resolved | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:systemd-sysv | 0:219-42.el7_4.7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:systemd | 228-150.29.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2025-07-11 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+2701 d
- TodayOct 8, 2026+3156 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- www.securitytracker.com/id/1041520
- access.redhat.com/errata/RHSA-2018:0260
- bugzilla.redhat.com/show_bug.cgi?id=1534701
- lists.debian.org/debian-lts-announce/2018/11/msg00017.html
- usn.ubuntu.com/3558-1/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.