c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`, the `HOSTALIASES` file, and if using a c-ares version prior to 1.27.0, the `/etc/hosts` file. If any of these configuration files has an embedded `NULL` character as the first character in a new line, it can lead to attempting to read memory prior to the start of the given buffer which may result in a crash. This issue is fixed in c-ares 1.27.0. No known workarounds exist.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade nodejs-nodemonUpgrade nodejs-develUpgrade nodejsUpgrade nodejs-full-i18nUpgrade nodejs-packagingUpgrade nodejs-docsUpgrade npmUpgrade c-aresUpgrade nodejs-packaging-bundlerUpgrade nodejs-libsUpgrade c-ares-devel | May 13, 2024 | Feb 23, 2024 |
| Alpine Linux | — | Upgrade c-ares | Mar 26, 2024 | Feb 23, 2024 |
| Amazon Linux Ami 2 | — | Upgrade c-ares-debuginfoUpgrade c-ares-develUpgrade c-ares | Mar 19, 2024 | Feb 23, 2024 |
| Amazon_linux_2023 | — | Upgrade nodejs20-develUpgrade nodejs20-libs-debuginfoUpgrade nodejs20-debuginfoUpgrade nodejs-full-i18nUpgrade nodejs-libsUpgrade nodejs20Upgrade nodejs20-full-i18nUpgrade c-ares-develUpgrade nodejsUpgrade c-ares-debugsourceUpgrade v8-10.2-develUpgrade nodejs20-debugsourceUpgrade c-ares-debuginfoUpgrade nodejs20-docsUpgrade c-aresUpgrade nodejs-npmUpgrade nodejs-debuginfoUpgrade nodejs20-libsUpgrade nodejs-develUpgrade nodejs-debugsourceUpgrade nodejs20-npmUpgrade v8-11.3-develUpgrade nodejs-libs-debuginfoUpgrade nodejs-docs | Feb 17, 2025 | Feb 23, 2024 |
| Debian | — | Upgrade c-ares | May 15, 2025 | Feb 23, 2024 |
| Freebsd | — | Upgrade c-ares | Feb 25, 2024 | Feb 23, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade c-ares | Nov 11, 2024 | Feb 23, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade c-ares | Oct 9, 2024 | Feb 23, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade c-ares | Oct 9, 2024 | Feb 23, 2024 |
| Huawei Euleros 2_0_sp8 | — | Upgrade c-ares-develUpgrade c-ares | Jul 23, 2024 | Feb 23, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade c-ares | Nov 11, 2024 | Feb 23, 2024 |
| Oracle_linux | — | Upgrade c-aresUpgrade npmUpgrade nodejs-nodemonUpgrade nodejs-full-i18nUpgrade c-ares-develUpgrade nodejs-packaging-bundlerUpgrade nodejs-docsUpgrade nodejsUpgrade nodejs-libsUpgrade nodejs-packagingUpgrade nodejs-devel | May 9, 2024 | Feb 23, 2024 |
| Redhat_linux | — | No solution existsUpgrade nodejs-debugsourceUpgrade nodejs-packaging-bundlerUpgrade nodejs-nodemonUpgrade nodejs-packagingUpgrade nodejs-libs-debuginfoUpgrade nodejs-debuginfoUpgrade nodejs-docsUpgrade c-aresUpgrade c-ares-develUpgrade nodejs-libsUpgrade npmUpgrade nodejs-develUpgrade nodejsUpgrade c-ares-debugsourceUpgrade nodejs-full-i18nUpgrade c-ares-debuginfo | May 13, 2024 | Feb 23, 2024 |
| Rocky_linux | — | Upgrade npmUpgrade c-ares-debugsourceUpgrade c-aresUpgrade nodejs-develUpgrade nodejsUpgrade c-ares-debuginfoUpgrade nodejs-libsUpgrade c-ares-develUpgrade nodejs-debugsourceUpgrade nodejs-full-i18nUpgrade nodejs-libs-debuginfoUpgrade nodejs-debuginfo | May 13, 2024 | Feb 23, 2024 |
| Suse | — | Upgrade c-ares-utilsUpgrade libcares-develUpgrade c-ares-develUpgrade libcares2-32bitUpgrade libcares2 | Apr 9, 2024 | Feb 23, 2024 |
| Ubuntu | — | Upgrade libc-ares2Upgrade libc-ares2 (Ubuntu Pro) | Mar 7, 2024 | Feb 23, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 23, 2024 |
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