Rocky Linux users can take advantage of several important security updates available for their systems. The first update affects Rocky Linux 9 and is related to a Thunderbird security update, while the second update affects Rocky Linux 8 with the same type of update. There's also another Thunderbird security update affecting Rocky Linux 8, which provides fixes for known vulnerabilities.

RLSA-2026:3516: Important: thunderbird security update
RLSA-2026:3407: Important: mingw-fontconfig security update
RLSA-2026:3515: Important: thunderbird security update

RLSA-2026:3516: Important: thunderbird security update

An update is available for thunderbird.
This update affects Rocky Linux 9.
A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list

RLSA-2026:3516: Important: thunderbird security update

RLSA-2026:3407: Important: mingw-fontconfig security update

An update is available for mingw-fontconfig.
This update affects Rocky Linux 8.
A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list

RLSA-2026:3407: Important: mingw-fontconfig security update

RLSA-2026:3515: Important: thunderbird security update

An update is available for thunderbird.
This update affects Rocky Linux 8.
A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list

RLSA-2026:3515: Important: thunderbird security update