{"id":"openSUSE-SU-2026:20748-1","summary":"Security update for dnsmasq","details":"This update for dnsmasq fixes the following issues\n\nSecurity issues:\n\n- CVE-2026-2291: dnsmasq can be abused to record false cached data enabling DoS or attacker redirect\n  (bsc#1258251).\n- CVE-2026-4890: DoS vulnerability in the DNSSEC validation (bsc#1265001).\n- CVE-2026-4891: heap-based out-of-bounds read vulnerability in the DNSSEC validation (bsc#1265002).\n- CVE-2026-4892: heap-based out-of-bounds write vulnerability in the DHCPv6 implementation (bsc#1265003).\n- CVE-2026-4893: information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks\n  (bsc#1265004).\n- CVE-2026-5172: buffer overflow in dnsmasq's extract_addresses() function (bsc#1265006).\n- CVE-2026-6507: out-of-bounds write in DHCP BOOTREPLY processing can lead to denial of service (bsc#1262487).\n\nNon security issues:\n\n- aardvark-dns upstream tests make dnsmasq dump core (bsc#1247812).\n- Drop rcFOO symlinks for CODE16 (jsc#PED-266.\n- libnettle: update to 4.0 breaks dnsmasq and gnutls (bsc#1257934).\n- unknown user or group: dnsmasq with latest proposed dnsmasq update when doing virsh net-start (bsc#1235517).\n- Update to security release 2.92rel2.\n","modified":"2026-05-19T18:23:49.259050374Z","published":"2026-05-13T16:33:13Z","related":["CVE-2026-2291","CVE-2026-4890","CVE-2026-4891","CVE-2026-4892","CVE-2026-4893","CVE-2026-5172","CVE-2026-6507"],"upstream":["CVE-2026-2291","CVE-2026-4890","CVE-2026-4891","CVE-2026-4892","CVE-2026-4893","CVE-2026-5172","CVE-2026-6507"],"references":[{"type":"ADVISORY"},{"type":"REPORT","url":"https://bugzilla.suse.com/1235517"},{"type":"REPORT","url":"https://bugzilla.suse.com/1235834"},{"type":"REPORT","url":"https://bugzilla.suse.com/1247812"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257934"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258251"},{"type":"REPORT","url":"https://bugzilla.suse.com/1262487"},{"type":"REPORT","url":"https://bugzilla.suse.com/1265001"},{"type":"REPORT","url":"https://bugzilla.suse.com/1265002"},{"type":"REPORT","url":"https://bugzilla.suse.com/1265003"},{"type":"REPORT","url":"https://bugzilla.suse.com/1265004"},{"type":"REPORT","url":"https://bugzilla.suse.com/1265006"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-2291"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-4890"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-4891"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-4892"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-4893"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-5172"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-6507"}],"schema_version":"1.7.5"}