{"id":"AZL-86763","summary":"CVE-2026-2291 affecting package dnsmasq for versions less than 2.92-1","details":"dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.","modified":"2026-09-02T06:51:55Z","published":"2026-05-11T18:16:31Z","upstream":["CVE-2026-2291"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2291"}],"affected":[{"package":{"name":"dnsmasq","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/dnsmasq"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.92-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86763.json"}}],"schema_version":"1.9.0"}