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A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade dnsmasq | May 15, 2026 | May 11, 2026 |
| Amazon Linux Ami 2 | — | Upgrade dnsmasqUpgrade dnsmasq-debuginfoUpgrade dnsmasq-utils | Jun 8, 2026 | Jun 8, 2026 |
| Amazon_linux_2023 | — | Upgrade dnsmasq-utilsUpgrade dnsmasq-debuginfoUpgrade dnsmasq-debugsourceUpgrade dnsmasq-utils-debuginfoUpgrade dnsmasq | May 28, 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 | Oct 22, 2026 | May 11, 2026 |
| Redhat_linux | — | No solution existsUpgrade dnsmasq-debugsourceUpgrade dnsmasq-utilsUpgrade dnsmasq-debuginfoUpgrade dnsmasq-utils-debuginfoUpgrade dnsmasq | May 20, 2026 | May 9, 2026 |
| Rocky_linux | — | Upgrade dnsmasq-utilsUpgrade dnsmasq-utils-debuginfoUpgrade dnsmasqUpgrade dnsmasq-debuginfoUpgrade dnsmasq-debugsource | Jun 1, 2026 | May 29, 2026 |
| Suse | — | Upgrade dnsmasqUpgrade dnsmasq-utils | May 26, 2026 | May 18, 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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