Packages
- dnsmasq - Small caching DNS proxy and DHCP/TFTP server
Details
Yiwei Hou discovered that Dnsmasq incorrectly handled logging of DS or
DNSKEY. A remote attacker could possibly use this issue to cause a
denial of service. (CVE-2026-12725)
It was discovered that Dnsmasq incorrectly validated the length of
fixed-length DNS record fields when parsing NS section records. A remote
attacker could possibly use this issue to cause Dnsmasq to read out of
bounds, possibly exposing sensitive information. (CVE-2026-12969)
Yiwei Hou discovered that Dnsmasq incorrectly handled logging of DS or
DNSKEY. A remote attacker could possibly use this issue to cause a
denial of service. (CVE-2026-12725)
It was discovered that Dnsmasq incorrectly validated the length of
fixed-length DNS record fields when parsing NS section records. A remote
attacker could possibly use this issue to cause Dnsmasq to read out of
bounds, possibly exposing sensitive information. (CVE-2026-12969)
Update instructions
After a standard system update you need to restart dnsmasq to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | dnsmasq – 2.92-1ubuntu0.4 | ||
| dnsmasq-base – 2.92-1ubuntu0.4 | |||
| dnsmasq-base-lua – 2.92-1ubuntu0.4 | |||
| dnsmasq-utils – 2.92-1ubuntu0.4 | |||
| 24.04 LTS noble | dnsmasq – 2.90-2ubuntu0.4 | ||
| dnsmasq-base – 2.90-2ubuntu0.4 | |||
| dnsmasq-base-lua – 2.90-2ubuntu0.4 | |||
| dnsmasq-utils – 2.90-2ubuntu0.4 | |||
| 22.04 LTS jammy | dnsmasq – 2.90-0ubuntu0.22.04.4 | ||
| dnsmasq-base – 2.90-0ubuntu0.22.04.4 | |||
| dnsmasq-base-lua – 2.90-0ubuntu0.22.04.4 | |||
| dnsmasq-utils – 2.90-0ubuntu0.22.04.4 | |||
| 20.04 LTS focal | dnsmasq – 2.90-0ubuntu0.20.04.1+esm3 | ||
| dnsmasq-base – 2.90-0ubuntu0.20.04.1+esm3 | |||
| dnsmasq-base-lua – 2.90-0ubuntu0.20.04.1+esm3 | |||
| dnsmasq-utils – 2.90-0ubuntu0.20.04.1+esm3 | |||
| 18.04 LTS bionic | dnsmasq – 2.90-0ubuntu0.18.04.1+esm4 | ||
| dnsmasq-base – 2.90-0ubuntu0.18.04.1+esm4 | |||
| dnsmasq-base-lua – 2.90-0ubuntu0.18.04.1+esm4 | |||
| dnsmasq-utils – 2.90-0ubuntu0.18.04.1+esm4 | |||
| 16.04 LTS xenial | dnsmasq – 2.90-0ubuntu0.16.04.1+esm4 | ||
| dnsmasq-base – 2.90-0ubuntu0.16.04.1+esm4 | |||
| dnsmasq-base-lua – 2.90-0ubuntu0.16.04.1+esm4 | |||
| dnsmasq-utils – 2.90-0ubuntu0.16.04.1+esm4 | |||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.