{"id":"openSUSE-SU-2026:21721-1","summary":"Security update for c-ares","details":"This update for c-ares fixes the following issues:\n\nUpdat to c-ares 1.36.8.\n\n- CVE-2026-33630: remotely triggerable use-after-free/double-free in query-completion handling via `ares_getaddrinfo()`\n  over TCP (bsc#1270416).\n- CVE-2026-69184: CPU exhaustion denial of service via unbounded DNS name compression pointer chains (bsc#1276290).\n- CVE-2026-69186: memory amplification denial of service via unvalidated DNS header record counts (bsc#1276291).\n\nChanges for c-ares:\n\n- For details, see https://c-ares.org/changelog.html.\n","modified":"2026-09-02T18:00:03.313428309Z","published":"2026-09-01T15:48:33Z","related":["CVE-2026-33630","CVE-2026-69184","CVE-2026-69186"],"upstream":["CVE-2026-33630","CVE-2026-69184","CVE-2026-69186"],"references":[{"type":"ADVISORY"},{"type":"REPORT","url":"https://bugzilla.suse.com/1270416"},{"type":"REPORT","url":"https://bugzilla.suse.com/1276290"},{"type":"REPORT","url":"https://bugzilla.suse.com/1276291"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-33630"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-69184"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-69186"}],"affected":[{"package":{"name":"c-ares","ecosystem":"openSUSE:Leap 16.0","purl":"pkg:rpm/opensuse/c-ares&distro=openSUSE%20Leap%2016.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.34.8-160000.1.1"}]}],"ecosystem_specific":{"binaries":[{"c-ares-utils":"1.34.8-160000.1.1","libcares2":"1.34.8-160000.1.1","c-ares-devel":"1.34.8-160000.1.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/openSUSE-SU-2026:21721-1.json"}}],"schema_version":"1.9.0"}