# dnsmasq-base security updates Patch Radar has 31 security fixes for dnsmasq-base, closing 24 CVEs. The newest is dnsmasq-base 2.90-2ubuntu0.4 (2.90-2ubuntu0.4), released July 18, 2026. - Web page: https://patchblox.com/security/product/linux/dnsmasq-base - Platform: Linux - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | [dnsmasq-base 2.90-2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dnsmasq-base-2.90-2ubuntu0.4.md) | Jul 18, 2026 | Ubuntu 24.04.5 LTS (noble) 2.90-2ubuntu0.4 | Routine | 2 | 0 | | [dnsmasq-base 2.90-0ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsmasq-base-2.90-0ubuntu0.22.04.4.md) | Jul 18, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.90-0ubuntu0.22.04.4 | Routine | 2 | 0 | | [dnsmasq-base 2.90-0ubuntu0.20.04.1+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.90-0ubuntu0.20.04.1-esm3.md) | Jul 18, 2026 | Ubuntu 20.04 LTS (focal) 2.90-0ubuntu0.20.04.1+esm3 | Routine | 2 | 0 | | [dnsmasq-base 2.90-0ubuntu0.18.04.1+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.90-0ubuntu0.18.04.1-esm4.md) | Jul 18, 2026 | Ubuntu 18.04.6 LTS (bionic) 2.90-0ubuntu0.18.04.1+esm4 | Routine | 2 | 0 | | [dnsmasq-base 2.92-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dnsmasq-base-2.92-1ubuntu0.4.md) | Jun 23, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.92-1ubuntu0.4 | Routine | 2 | 0 | | [dnsmasq-base 2.91-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dnsmasq-base-2.91-1ubuntu0.2.md) | May 27, 2026 | Ubuntu 25.10 (questing) 2.91-1ubuntu0.2 | High | 6 | 0 | | [dnsmasq-base 2.90-2ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dnsmasq-base-2.90-2ubuntu0.3.md) | May 27, 2026 | Ubuntu 24.04.5 LTS (noble) 2.90-2ubuntu0.3 | High | 6 | 0 | | [dnsmasq-base 2.90-0ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsmasq-base-2.90-0ubuntu0.22.04.3.md) | May 27, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.90-0ubuntu0.22.04.3 | High | 6 | 0 | | [dnsmasq-base 2.90-0ubuntu0.20.04.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.90-0ubuntu0.20.04.1-esm2.md) | May 27, 2026 | Ubuntu 20.04 LTS (focal) 2.90-0ubuntu0.20.04.1+esm2 | High | 6 | 0 | | [dnsmasq-base 2.90-0ubuntu0.18.04.1+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.90-0ubuntu0.18.04.1-esm3.md) | May 27, 2026 | Ubuntu 18.04.6 LTS (bionic) 2.90-0ubuntu0.18.04.1+esm3 | High | 6 | 0 | | [dnsmasq-base 2.92-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dnsmasq-base-2.92-1ubuntu0.2.md) | May 11, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.92-1ubuntu0.2 | High | 6 | 0 | | [dnsmasq-base 2.92-1ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dnsmasq-base-2.92-1ubuntu0.3.md) | Apr 17, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.92-1ubuntu0.3 | High | 1 | 0 | | [dnsmasq-base 2.85-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-dnsmasq-base-2.85-1ubuntu1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 2.85-1ubuntu1 | Routine | 1 | 0 | | [dnsmasq-base 2.85-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-dnsmasq-base-2.85-1ubuntu1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 2.85-1ubuntu1 | Routine | 1 | 0 | | [dnsmasq-base 2.90-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsmasq-base-2.90-0ubuntu0.22.04.1.md) | Jan 16, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.90-0ubuntu0.22.04.1 | High | 4 | 0 | | [dnsmasq-base 2.90-0ubuntu0.18.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.90-0ubuntu0.18.04.1-esm1.md) | Jan 16, 2026 | Ubuntu 18.04.6 LTS (bionic) 2.90-0ubuntu0.18.04.1+esm1 | High | 4 | 0 | | [dnsmasq-base 2.90-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.90-0ubuntu0.20.04.1.md) | Jun 6, 2024 | Ubuntu 20.04 LTS (focal) 2.90-0ubuntu0.20.04.1 | High | 3 | 0 | | [dnsmasq-base 2.90-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-dnsmasq-base-2.90-1.md) | Feb 13, 2024 | Ubuntu 24.10 (oracular) 2.90-1 | High | 2 | 0 | | [dnsmasq-base 2.90-1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-dnsmasq-base-2.90-1.md) | Feb 13, 2024 | Ubuntu 25.04 (plucky) 2.90-1 | High | 2 | 0 | | [dnsmasq-base 2.79-1ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.79-1ubuntu0.7.md) | Mar 15, 2023 | Ubuntu 18.04.6 LTS (bionic) 2.79-1ubuntu0.7 | High | 1 | 0 | | [dnsmasq-base 2.80-1.1ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.80-1.1ubuntu1.7.md) | Mar 15, 2023 | Ubuntu 20.04 LTS (focal) 2.80-1.1ubuntu1.7 | High | 1 | 0 | | [dnsmasq-base 2.86-1.1ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsmasq-base-2.86-1.1ubuntu0.3.md) | Mar 15, 2023 | Ubuntu 22.04.1 LTS (jammy) 2.86-1.1ubuntu0.3 | High | 1 | 0 | | [dnsmasq-base 2.79-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.79-1ubuntu0.6.md) | Apr 6, 2022 | Ubuntu 18.04.6 LTS (bionic) 2.79-1ubuntu0.6 | High | 1 | 0 | | [dnsmasq-base 2.80-1.1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.80-1.1ubuntu1.5.md) | Apr 6, 2022 | Ubuntu 20.04 LTS (focal) 2.80-1.1ubuntu1.5 | High | 1 | 0 | | [dnsmasq-base 2.86-1.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsmasq-base-2.86-1.1ubuntu0.1.md) | Apr 6, 2022 | Ubuntu 22.04.1 LTS (jammy) 2.86-1.1ubuntu0.1 | High | 1 | 0 | | [dnsmasq-base 2.79-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.79-1ubuntu0.4.md) | Apr 8, 2021 | Ubuntu 18.04.6 LTS (bionic) 2.79-1ubuntu0.4 | Routine | 1 | 0 | | [dnsmasq-base 2.80-1.1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.80-1.1ubuntu1.4.md) | Apr 8, 2021 | Ubuntu 20.04 LTS (focal) 2.80-1.1ubuntu1.4 | Routine | 1 | 0 | | [dnsmasq-base 2.82-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-dnsmasq-base-2.82-1ubuntu2.md) | Jan 19, 2021 | Ubuntu 24.10 (oracular) 2.82-1ubuntu2 | High | 7 | 0 | | [dnsmasq-base 2.82-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-dnsmasq-base-2.82-1ubuntu2.md) | Jan 19, 2021 | Ubuntu 25.04 (plucky) 2.82-1ubuntu2 | High | 7 | 0 | | [dnsmasq-base 2.79-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsmasq-base-2.79-1ubuntu0.2.md) | Jan 18, 2021 | Ubuntu 18.04.6 LTS (bionic) 2.79-1ubuntu0.2 | High | 8 | 0 | | [dnsmasq-base 2.80-1.1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsmasq-base-2.80-1.1ubuntu1.2.md) | Jan 18, 2021 | Ubuntu 20.04 LTS (focal) 2.80-1.1ubuntu1.2 | High | 8 | 0 | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo