Rocky Linux 8 just released three important security patches for the main kernel, real-time kernel, and Firefox browser. Teams can check the CVSS severity ratings attached to each vulnerability to figure out which systems need immediate attention. The official errata pages link straight to detailed CVE reports so engineers can review the exact technical flaws before rolling anything out.

RLSA-2026:19664: Important: kernel-rt security update
RLSA-2026:19588: Important: firefox security update
RLSA-2026:19666: Important: kernel security update

RLSA-2026:19664: Important: kernel-rt security update

An update is available for kernel-rt.
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-2026:19664: Important: kernel-rt security update

RLSA-2026:19588: Important: firefox security update

An update is available for firefox.
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-2026:19588: Important: firefox security update

RLSA-2026:19666: Important: kernel security update

An update is available for kernel.
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-2026:19666: Important: kernel security update