BSD Portsdnsmasq -- multiple vulnerabilities
· CVE-2026-2291, CVE-2026-4890, CVE-2026-4891, CVE-2026-4892, CVE-2026-4893, CVE-2026-5172 · VuXML entry
Simon Kelley reports: Today, 11th May 2026 CERT is releasing a set of six CVEs for serious security vulnerabilities in dnsmasq. These are all long-standing bugs which apply to pretty much all non-ancient versions. Christopher Cullen and Molly Jaconski write, in Vulnerability Note VU#471747: CVE-2026-2291 dnsmasq's extract_name() function can be abused to cause a heap buffer overflow, enabling an attacker to inject …
Affected versions
- dnsmasq < 2.92rel2,1
- dnsmasq-devel < 2.93.r1,8
By system
2 still vulnerable, 2 fixed. Where VuXML applies (FreeBSD, DragonFly, FreeBSD's derivatives) a port is vulnerable while its version is in a range; pkgsrc says itself whether it lists a CVE of this advisory; OpenBSD and MidnightBSD keep no list this site reads, so their row is only an estimate: FreeBSD's ranges applied to upstream's version.
| System | Port | Version | State | Fixed |
|---|---|---|---|---|
| FreeBSD | dns/dnsmasq | 2.93,1 | fixed | |
| OpenBSD | net/dnsmasq | 2.93 | out of range, by version | |
| NetBSD | net/dnsmasq | 2.93 | not listed | |
| MidnightBSD | dns/dnsmasq | 2.92,1 | in range, by version | |
| DragonFly | dns/dnsmasq | 2.91_1,1 | vulnerable since 2026-05-11 | |
| OPNsense | opnsense/dnsmasq | 2.93,1 | fixed | |
| DragonFly | dns/dnsmasq-devel | 2.92.t13,6 | vulnerable since 2026-05-11 |