{"id":"CVE-2016-7796","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-7796","generatedAt":"2026-10-28T19:46:44.626Z","title":"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.","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.","published":"2016-10-13T14:59:15.000Z","lastModified":"2026-06-17T00:53:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-20"],"affected":["systemd project/systemd","novell/suse linux enterprise software development kit","novell/suse linux enterprise desktop","novell/suse linux enterprise server","novell/suse linux enterprise server for sap","redhat/enterprise linux desktop","redhat/enterprise linux hpc node","redhat/enterprise linux server","redhat/enterprise linux workstation"],"epss":{"score":0.00855,"percentile":0.58164,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.85%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0003.html","source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2016/09/30/1","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/93250","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1037320","source":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1381911","tags":["Issue Tracking","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://github.com/systemd/systemd/issues/4234#issuecomment-250441246","tags":["Exploit","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://rhn.redhat.com/errata/RHBA-2015-2092.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0003.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2016/09/30/1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/93250","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037320","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1381911","tags":["Issue Tracking","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/systemd/systemd/issues/4234#issuecomment-250441246","tags":["Exploit","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://rhn.redhat.com/errata/RHBA-2015-2092.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-7796","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}