{"id":"RLSA-2026:97486","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.","modified":"2026-11-13T06:30:05.391336769Z","published":"2026-11-13T06:05:14.840310Z","upstream":["CVE-2026-18103"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:97486","license":"CC-BY-4.0"},"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"}],"affected":[{"package":{"name":"dhcp-client","ecosystem":"Rocky Linux:9","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:97486.json"}},{"package":{"name":"dhcp-client-debuginfo","ecosystem":"Rocky 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