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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade dnsmasq-utilsUpgrade dnsmasq | May 27, 2026 | May 19, 2026 |
| Alpine Linux | — | Upgrade dnsmasq | May 15, 2026 | May 11, 2026 |
| Amazon Linux Ami 2 | — | Upgrade dnsmasqUpgrade dnsmasq-debuginfoUpgrade dnsmasq-utils | Jun 16, 2026 | Jun 16, 2026 |
| Amazon_linux_2023 | — | Upgrade dnsmasq-debuginfoUpgrade dnsmasq-utils-debuginfoUpgrade dnsmasqUpgrade dnsmasq-utilsUpgrade dnsmasq-debugsource | Jun 15, 2026 | May 11, 2026 |
| Debian | — | Upgrade dnsmasq | May 12, 2026 | May 12, 2026 |
| Freebsd | — | Upgrade dnsmasq-develUpgrade dnsmasq | May 13, 2026 | May 11, 2026 |
| Gentoo Linux | — | Upgrade net-dns/dnsmasq. | Aug 16, 2026 | Aug 13, 2026 |
| Oracle_linux | — | Upgrade dnsmasq-utilsUpgrade dnsmasq | May 28, 2026 | May 11, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Aug 20, 2026 | May 9, 2026 |
| Redhat_linux | — | Upgrade dnsmasq-utilsUpgrade dnsmasqUpgrade dnsmasq-debuginfoUpgrade dnsmasq-debugsourceUpgrade dnsmasq-utils-debuginfoNo solution exists | May 20, 2026 | May 9, 2026 |
| Rocky_linux | — | Upgrade dnsmasq-utilsUpgrade dnsmasq-debugsourceUpgrade dnsmasq-utils-debuginfoUpgrade dnsmasq-debuginfoUpgrade dnsmasq | Jun 1, 2026 | May 29, 2026 |
| Suse | — | Upgrade dnsmasq-utilsUpgrade dnsmasq | May 13, 2026 | May 13, 2026 |
| Ubuntu | — | Upgrade dnsmasq (Ubuntu Pro)Upgrade dnsmasq | May 25, 2026 | May 12, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 29, 2026 | May 11, 2026 |
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