HighFix available
Red Hat Security Advisory: dnsmasq security update
Type: advisorySources: OSV
- Products
- dnsmasq, dnsmasq-debuginfo, dnsmasq-debugsource, dnsmasq-utils, dnsmasq-utils-debuginfo
- Affected versions
- Not specified
- Fixed versions
- 0:2.85-18.el9_8.1
- CVEs
- CVE-2026-2291, CVE-2026-4890, CVE-2026-4891, CVE-2026-4892, CVE-2026-4893
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:11 UTC · Revision 1
Source evidence
Red Hat Security Advisory: dnsmasq security update
core-osv · Original sourcePublished 20 May 2026, 10:10 UTC
Red Hat Security Advisory: dnsmasq security update
osv:RHSA-2026:19373
dnsmasq
Fixed versions: 0:2.85-18.el9_8.1
dnsmasq-debuginfo
Fixed versions: 0:2.85-18.el9_8.1
dnsmasq-debugsource
Fixed versions: 0:2.85-18.el9_8.1
dnsmasq-utils
Fixed versions: 0:2.85-18.el9_8.1
dnsmasq-utils-debuginfo
Fixed versions: 0:2.85-18.el9_8.1
Complete source record
{
"id": "fefc2ade579ce7d2085cfafe613454bc3cc6f2df75522918e901556cc2fd633d",
"url": "https://osv.dev/vulnerability/RHSA-2026%3A19373",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Red Hat Security Advisory: dnsmasq security update",
"summary": "Red Hat Security Advisory: dnsmasq security update",
"evidence": "osv:RHSA-2026:19373",
"products": [
{
"name": {
"value": "dnsmasq",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:2.85-18.el9_8.1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dnsmasq-debuginfo",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:2.85-18.el9_8.1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dnsmasq-debugsource",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:2.85-18.el9_8.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dnsmasq-utils",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:2.85-18.el9_8.1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dnsmasq-utils-debuginfo",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:2.85-18.el9_8.1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "RHSA-2026:19373",
"aliases": [
"RHSA-2026:19373"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:2.85-18.el9_8.1"
}
]
}
],
"package": {
"name": "dnsmasq",
"purl": "pkg:rpm/redhat/dnsmasq",
"ecosystem": "Red Hat:enterprise_linux:9::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:19373.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:2.85-18.el9_8.1"
}
]
}
],
"package": {
"name": "dnsmasq-debuginfo",
"purl": "pkg:rpm/redhat/dnsmasq-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:9::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:19373.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:2.85-18.el9_8.1"
}
]
}
],
"package": {
"name": "dnsmasq-debugsource",
"purl": "pkg:rpm/redhat/dnsmasq-debugsource",
"ecosystem": "Red Hat:enterprise_linux:9::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:19373.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:2.85-18.el9_8.1"
}
]
}
],
"package": {
"name": "dnsmasq-utils",
"purl": "pkg:rpm/redhat/dnsmasq-utils",
"ecosystem": "Red Hat:enterprise_linux:9::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:19373.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:2.85-18.el9_8.1"
}
]
}
],
"package": {
"name": "dnsmasq-utils-debuginfo",
"purl": "pkg:rpm/redhat/dnsmasq-utils-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:9::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:19373.json"
}
}
],
"modified": "2026-10-17T10:10:26Z",
"provider": "osv",
"upstream": [
"CVE-2026-2291",
"CVE-2026-4890",
"CVE-2026-4891",
"CVE-2026-4892",
"CVE-2026-4893"
],
"references": [
"https://access.redhat.com/errata/RHSA-2026:19373",
"https://access.redhat.com/security/updates/classification/#important",
"https://bugzilla.redhat.com/show_bug.cgi?id=2439088",
"https://bugzilla.redhat.com/show_bug.cgi?id=2458516",
"https://bugzilla.redhat.com/show_bug.cgi?id=2458517",
"https://bugzilla.redhat.com/show_bug.cgi?id=2458518",
"https://bugzilla.redhat.com/show_bug.cgi?id=2458519",
"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_19373.json",
"https://access.redhat.com/security/cve/CVE-2026-2291",
"https://www.cve.org/CVERecord?id=CVE-2026-2291",
"https://nvd.nist.gov/vuln/detail/CVE-2026-2291",
"https://access.redhat.com/security/cve/CVE-2026-4890",
"https://www.cve.org/CVERecord?id=CVE-2026-4890",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4890",
"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html",
"https://access.redhat.com/security/cve/CVE-2026-4891",
"https://www.cve.org/CVERecord?id=CVE-2026-4891",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4891",
"https://access.redhat.com/security/cve/CVE-2026-4892",
"https://www.cve.org/CVERecord?id=CVE-2026-4892",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4892",
"https://access.redhat.com/security/cve/CVE-2026-4893",
"https://www.cve.org/CVERecord?id=CVE-2026-4893",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4893"
]
},
"related_cves": [
{
"value": "CVE-2026-2291",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4890",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4891",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4892",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4893",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 352820,
"published_at": "2026-05-20T10:10:42+00:00"
}