{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "Build for rhel7els, oraclelinux7els and cloudlinux7els: they get the\n existing fixes for CVE-2022-0934, CVE-2023-28450, CVE-2026-4890,\n CVE-2026-4891 and CVE-2026-4892\n- Bump release to sort above Oracle Linux 7 dnsmasq-2.76-17.0.3.el7_9.3", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/oraclelinux7els/advisories/2026/clsa-2026_1792817189.json" } ], "tracking": { "current_release_date": "2026-10-24T04:47:30Z", "generator": { "date": "2026-10-24T04:47:30Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1792817189", "initial_release_date": "2026-10-24T04:47:30Z", "revision_history": [ { "date": "2026-10-24T04:47:30Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "dnsmasq: Fix of 4 CVEs" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Oracle Linux 7", "product": { "name": "Oracle Linux 7", "product_id": "Oracle-Linux-7", "product_identification_helper": { "cpe": "cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Oracle Linux" } ], "category": "vendor", "name": "Oracle Corporation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product": { "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product_id": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/dnsmasq-utils@2.76-17.0.3.el7_9.99.tuxcare.els5?arch=i686" } } }, { "category": "product_version", "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product": { "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product_id": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/dnsmasq@2.76-17.0.3.el7_9.99.tuxcare.els5?arch=i686" } } } ], "category": "architecture", "name": "i686" }, { "branches": [ { "category": "product_version", "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product": { "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product_id": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/dnsmasq-utils@2.76-17.0.3.el7_9.99.tuxcare.els5?arch=x86_64" } } }, { "category": "product_version", "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product": { "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product_id": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/dnsmasq@2.76-17.0.3.el7_9.99.tuxcare.els5?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686 as a component of Oracle Linux 7", "product_id": "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686" }, "product_reference": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "relates_to_product_reference": "Oracle-Linux-7" }, { "category": "default_component_of", "full_product_name": { "name": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64 as a component of Oracle Linux 7", "product_id": "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" }, "product_reference": "dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "relates_to_product_reference": "Oracle-Linux-7" }, { "category": "default_component_of", "full_product_name": { "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686 as a component of Oracle Linux 7", "product_id": "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686" }, "product_reference": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "relates_to_product_reference": "Oracle-Linux-7" }, { "category": "default_component_of", "full_product_name": { "name": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64 as a component of Oracle Linux 7", "product_id": "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" }, "product_reference": "dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "relates_to_product_reference": "Oracle-Linux-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4891", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4891" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519082", "url": "https://github.com/NixOS/nixpkgs/pull/519082" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519093", "url": "https://github.com/NixOS/nixpkgs/pull/519093" }, { "category": "external", "summary": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2", "url": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2" }, { "category": "external", "summary": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html" }, { "category": "external", "summary": "https://thekelleys.org.uk/dnsmasq/CVE/", "url": "https://thekelleys.org.uk/dnsmasq/CVE/" }, { "category": "external", "summary": "https://www.kb.cert.org/vuls/id/471747", "url": "https://www.kb.cert.org/vuls/id/471747" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19158", "url": "https://access.redhat.com/errata/RHSA-2026:19158" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19373", "url": "https://access.redhat.com/errata/RHSA-2026:19373" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20589", "url": "https://access.redhat.com/errata/RHSA-2026:20589" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:34508", "url": "https://access.redhat.com/errata/RHSA-2026:34508" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:40762", "url": "https://access.redhat.com/errata/RHSA-2026:40762" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-4891", "url": "https://access.redhat.com/security/cve/CVE-2026-4891" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2458517", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458517" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4891.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4891.json" } ], "release_date": "2026-05-11T18:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-24T04:46:30.662606Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189", "product_ids": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-4892", "cwe": { "id": "CWE-122", "name": "Heap-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4892" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519082", "url": "https://github.com/NixOS/nixpkgs/pull/519082" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519093", "url": "https://github.com/NixOS/nixpkgs/pull/519093" }, { "category": "external", "summary": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2", "url": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2" }, { "category": "external", "summary": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html" }, { "category": "external", "summary": "https://thekelleys.org.uk/dnsmasq/CVE/", "url": "https://thekelleys.org.uk/dnsmasq/CVE/" }, { "category": "external", "summary": "https://www.kb.cert.org/vuls/id/471747", "url": "https://www.kb.cert.org/vuls/id/471747" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19158", "url": "https://access.redhat.com/errata/RHSA-2026:19158" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19373", "url": "https://access.redhat.com/errata/RHSA-2026:19373" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20589", "url": "https://access.redhat.com/errata/RHSA-2026:20589" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:34508", "url": "https://access.redhat.com/errata/RHSA-2026:34508" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:40762", "url": "https://access.redhat.com/errata/RHSA-2026:40762" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-4892", "url": "https://access.redhat.com/security/cve/CVE-2026-4892" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2458518", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458518" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4892.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4892.json" } ], "release_date": "2026-05-11T18:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-24T04:46:30.662606Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189", "product_ids": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-4890", "cwe": { "id": "CWE-835", "name": "Loop with Unreachable Exit Condition ('Infinite Loop')" }, "notes": [ { "category": "description", "text": "A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4890" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519082", "url": "https://github.com/NixOS/nixpkgs/pull/519082" }, { "category": "external", "summary": "https://github.com/NixOS/nixpkgs/pull/519093", "url": "https://github.com/NixOS/nixpkgs/pull/519093" }, { "category": "external", "summary": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2", "url": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2" }, { "category": "external", "summary": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html" }, { "category": "external", "summary": "https://thekelleys.org.uk/dnsmasq/CVE/", "url": "https://thekelleys.org.uk/dnsmasq/CVE/" }, { "category": "external", "summary": "https://www.kb.cert.org/vuls/id/471747", "url": "https://www.kb.cert.org/vuls/id/471747" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19158", "url": "https://access.redhat.com/errata/RHSA-2026:19158" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19373", "url": "https://access.redhat.com/errata/RHSA-2026:19373" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20589", "url": "https://access.redhat.com/errata/RHSA-2026:20589" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:34508", "url": "https://access.redhat.com/errata/RHSA-2026:34508" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:40762", "url": "https://access.redhat.com/errata/RHSA-2026:40762" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-4890", "url": "https://access.redhat.com/security/cve/CVE-2026-4890" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2458516", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458516" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4890.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4890.json" } ], "release_date": "2026-05-11T18:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-24T04:46:30.662606Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189", "product_ids": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2023-28450", "notes": [ { "category": "description", "text": "An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-28450" }, { "category": "external", "summary": "https://capec.mitre.org/data/definitions/495.html", "url": "https://capec.mitre.org/data/definitions/495.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6UQ6LKDTLSSD64TBIZ3XEKBM2SWC63VV/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6UQ6LKDTLSSD64TBIZ3XEKBM2SWC63VV/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU2ZT4ITSEOOR2CFBAHK4Z67KXJIEWQA/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU2ZT4ITSEOOR2CFBAHK4Z67KXJIEWQA/" }, { "category": "external", "summary": "https://thekelleys.org.uk/dnsmasq/doc.html", "url": "https://thekelleys.org.uk/dnsmasq/doc.html" }, { "category": "external", "summary": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=blob%3Bf=CHANGELOG", "url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=blob%3Bf=CHANGELOG" }, { "category": "external", "summary": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5", "url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html", "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html" } ], "release_date": "2023-03-15T21:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-24T04:46:30.662606Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189", "product_ids": [ "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.i686", "Oracle-Linux-7:dnsmasq-utils-0:2.76-17.0.3.el7_9.99.tuxcare.els5.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792817189" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }