{"id":"OSV-2026-98","aliases":[],"status":"published","title":"Heap-buffer-overflow in hostname_issubdomain","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nhostname_issubdomain\nfuzz_util.c\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-01-21T00:16:59.551255Z","modified":"2026-01-21T00:16:59Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"dnsmasq","ranges":[{"type":"GIT","events":[{"introduced":"1269f074f86bb959863012063060a3a082d37dc4"},{"fixed":"1eab169173fc4c8579a3db61186096fe117e6aca"}]}],"versions":["v2.93test1","v2.93test2","v2.93test3","v2.93test4","v2.93test5","v2.93test6"]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-98","title":"Heap-buffer-overflow in hostname_issubdomain","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nhostname_issubdomain\nfuzz_util.c\n```\n","status":"published","published":"2026-01-21T00:16:59.551255Z","modified":"2026-01-21T00:16:59.551548Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}