systemd: Assertion failure when PID 1 receives a zero-length message over notify socket
Published Oct 13, 2016
6.8
MEDIUMCVSS 3.0
EPSS 0.63%
Description
The manager_invoke_notify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.
Affected products
No data.
Configuration 1
- 16.04
Configuration 2
- ≤ 231
No data.
Red Hat Enterprise Linux 7
systemd-0:219-30.el7_3.3
Fixed · RHSA-2016:2610
Red Hat Enterprise Linux 7.2 Extended Update Support
systemd-0:219-19.el7_2.18
Fixed · RHSA-2016:2694
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | systemd-0:219-30.el7_3.3 | Fixed | RHSA-2016:2610 |
| Red Hat Enterprise Linux 7.2 Extended Update Support | systemd-0:219-19.el7_2.18 | Fixed | RHSA-2016:2694 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.63% (0.00628) | 48.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00633) | 45.40th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.15% (0.00149) | 32.02th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.21% (0.02207) | 74.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.15% (0.00149) | 32.82th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (13)
- http://rhn.redhat.com/errata/RHSA-2016-2610.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-2694.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2016/09/28/9 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/30/1 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.securityfocus.com/bid/93223 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037320 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-3094-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-7795 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1380286 Issue Tracking
- https://github.com/systemd/systemd/issues/4234 x_refsource_CONFIRMExploitPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-7795
- https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-7795
Change history (0)
No recorded changes yet.