{"schema_version": "1.7.0", "id": "RLSA-2026:97486", "modified": "2026-11-13T06:06:55.278981Z", "published": "2026-11-13T06:05:14.840310Z", "upstream": ["CVE-2026-18103"], "summary": "Low: dhcp security, bug fix, and enhancement update", "details": "The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.\n\nSecurity Fix(es):\n\n* dhcp-server: dhcp-server: Persistent denial of service due to buffer overflow via OMAPI (CVE-2026-18103)\n\nBug Fix(es) and Enhancement(s):\n\n* dhcpd dies constantly with \"Error allocating fallback interface: invalid argument\" (JIRA:Rocky Linux-151420)\n\n* Attempt to free pointer that is inside a structure in get_hw_addr2 (JIRA:Rocky Linux-235872)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 9 Release Notes linked from the References section.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client", "purl": "pkg:rpm/rocky-linux/dhcp-client?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-client-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debugsource", "purl": "pkg:rpm/rocky-linux/dhcp-debugsource?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay", "purl": "pkg:rpm/rocky-linux/dhcp-relay?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-relay-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server", "purl": "pkg:rpm/rocky-linux/dhcp-server?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-server-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client", "purl": "pkg:rpm/rocky-linux/dhcp-client?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-client-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debugsource", "purl": "pkg:rpm/rocky-linux/dhcp-debugsource?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay", "purl": "pkg:rpm/rocky-linux/dhcp-relay?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": 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"pkg:rpm/rocky-linux/dhcp-debugsource?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay", "purl": "pkg:rpm/rocky-linux/dhcp-relay?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-relay-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server", "purl": "pkg:rpm/rocky-linux/dhcp-server?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-server-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client", "purl": "pkg:rpm/rocky-linux/dhcp-client?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-client-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-client-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-debugsource", "purl": "pkg:rpm/rocky-linux/dhcp-debugsource?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay", "purl": "pkg:rpm/rocky-linux/dhcp-relay?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-relay-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-relay-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server", "purl": "pkg:rpm/rocky-linux/dhcp-server?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-server-debuginfo", "purl": "pkg:rpm/rocky-linux/dhcp-server-debuginfo?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}, {"package": {"ecosystem": "Rocky Linux:9", "name": "dhcp-common", "purl": "pkg:rpm/rocky-linux/dhcp-common?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:4.4.2-22.b1.el9.rocky.0.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:97486"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508081"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:97486"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:97486"}}