CVE-2016-7796

Name: CVE-2016-7796
Creator: NVD / NIST
Published: 2016-10-13T14:59:14.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.85%

Last modified Jun 17, 2026

CVE-2016-7796 is a vulnerability of currently unknown severity. The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.

Metrics

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Systemd Project	Systemd	209	—
Systemd Project	Systemd	213	—
Systemd Project	Systemd	214	—
Systemd Project	Systemd	229	—
Novell	Suse Linux Enterprise Software Development Kit	12.0	Sp1
Novell	Suse Linux Enterprise Desktop	12	Sp1
Novell	Suse Linux Enterprise Server	12.0	—
Novell	Suse Linux Enterprise Server For Sap	12.0	—
Redhat	Enterprise Linux Desktop	7.0	—
Redhat	Enterprise Linux Hpc Node	7.0	—
Redhat	Enterprise Linux Server	7.0	—
Redhat	Enterprise Linux Workstation	7.0	—

References

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0003.html
http://www.openwall.com/lists/oss-security/2016/09/30/1Third Party Advisory
http://www.securityfocus.com/bid/93250Third Party Advisory
http://www.securitytracker.com/id/1037320
https://bugzilla.redhat.com/show_bug.cgi?id=1381911Issue Tracking, Third Party Advisory, VDB Entry
https://github.com/systemd/systemd/issues/4234#issuecomment-250441246Exploit, Patch, Vendor Advisory
https://rhn.redhat.com/errata/RHBA-2015-2092.htmlThird Party Advisory
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweetExploit, Technical Description, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0003.html
http://www.openwall.com/lists/oss-security/2016/09/30/1Third Party Advisory
http://www.securityfocus.com/bid/93250Third Party Advisory
http://www.securitytracker.com/id/1037320
https://bugzilla.redhat.com/show_bug.cgi?id=1381911Issue Tracking, Third Party Advisory, VDB Entry
https://github.com/systemd/systemd/issues/4234#issuecomment-250441246Exploit, Patch, Vendor Advisory
https://rhn.redhat.com/errata/RHBA-2015-2092.htmlThird Party Advisory
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweetExploit, Technical Description, Third Party Advisory

Timeline

Published: Oct 13, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-7796?

How severe is CVE-2016-7796?

Severity scoring for CVE-2016-7796 is pending analysis. The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2016-7796?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-7796?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST