Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7796
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:24 UTC · Revision 1
Source evidence
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.
osv:CVE-2016-7796
Complete source record
{
"id": "a7e42515f22bedfa60da63deb505db2fa7d68daabdee6a86d6ef4777b6be0179",
"url": "https://osv.dev/vulnerability/CVE-2016-7796",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7796",
"summary": "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.",
"evidence": "osv:CVE-2016-7796",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-7796",
"aliases": [
"CVE-2016-7796"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
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"affected": [
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"type": "GIT",
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{
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{
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"v216",
"v215",
"v214",
"v213",
"v212",
"v211",
"v210",
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],
"database_specific": {
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"database_specific": {
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{
"cpe": "cpe:2.3:a:systemd_project:systemd:209:*:*:*:*:*:*:*",
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{
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{
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{
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{
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}
],
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},
{
"cpe": "cpe:2.3:a:systemd_project:systemd:229:*:*:*:*:*:*:*",
"range": [
{
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},
{
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}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"209",
"213",
"214",
"229",
"v229",
"v228",
"v227",
"v226",
"v225",
"v224",
"v223",
"v222",
"v221",
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"v220",
"v218",
"v217",
"v216",
"v215",
"v214",
"v213",
"v212",
"v211",
"v210",
"v209"
],
"database_specific": {
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}
}
],
"modified": "2026-10-24T10:46:40.082913190Z",
"provider": "osv",
"references": [
"https://rhn.redhat.com/errata/RHBA-2015-2092.html",
"https://bugzilla.redhat.com/show_bug.cgi?id=1381911",
"https://github.com/systemd/systemd/issues/4234#issuecomment-250441246",
"https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:novell:suse_linux_enterprise_desktop:12:sp1:*:*:*:*:*:*"
],
"vendor_product": "novell:suse_linux_enterprise_desktop",
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{
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{
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]
},
{
"cpes": [
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{
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},
{
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{
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{
"cpes": [
"cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:sp1:*:*:*:*:*:*"
],
"vendor_product": "novell:suse_linux_enterprise_software_development_kit",
"extracted_events": [
{
"range": [
{
"introduced": "12.0-sp1"
},
{
"last_affected": "12.0-sp1"
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],
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]
},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
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"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
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],
"source": "CPE_STRING"
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]
},
{
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],
"vendor_product": "redhat:enterprise_linux_hpc_node",
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]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
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{
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{
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],
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]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
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}
],
"source": "CPE_STRING"
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]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-7796",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 441162,
"published_at": "2016-10-13T14:59:14.567+00:00"
}