CVE-2016-7795

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-10-13 · updated 2026-06-17
Weakness: CWE-20

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

Canonical Ubuntu Linux: 16.04
systemd: through 231

References

http://rhn.redhat.com/errata/RHSA-2016-2610.html
http://rhn.redhat.com/errata/RHSA-2016-2694.html
http://www.openwall.com/lists/oss-security/2016/09/28/9
http://www.openwall.com/lists/oss-security/2016/09/30/1
http://www.securityfocus.com/bid/93223
http://www.securitytracker.com/id/1037320
http://www.ubuntu.com/usn/USN-3094-1
https://github.com/systemd/systemd/issues/4234
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet
http://rhn.redhat.com/errata/RHSA-2016-2610.html
http://rhn.redhat.com/errata/RHSA-2016-2694.html
http://www.openwall.com/lists/oss-security/2016/09/28/9

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