Several important security updates have been made available for various Red Hat Enterprise Linux versions. These updates include patches for Thunderbird, Kpatch-patch, Git LFS, libvpx, and libpng15, among others. Each of these updates has a Common Vulnerability Scoring System (CVSS) base score that provides a detailed severity rating for each vulnerability. Users are advised to apply the updates as soon as possible to ensure their systems remain secure.

RHSA-2026:3982: Important: thunderbird security update
RHSA-2026:3987: Important: kpatch-patch-5_14_0-611_9_1 security update
RHSA-2026:3980: Important: thunderbird security update
RHSA-2026:3979: Important: thunderbird security update
RHSA-2026:3972: Important: git-lfs security update
RHSA-2026:3974: Important: git-lfs security update
RHSA-2026:3967: Important: libvpx security update
RHSA-2026:3969: Important: libpng15 security update
RHSA-2026:3970: Important: rhc-worker-playbook security update
RHSA-2026:3966: Moderate: kernel security update
RHSA-2026:3963: Moderate: kernel security update
RHSA-2026:3964: Moderate: kernel-rt security update

RHSA-2026:3982: Important: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3982: Important: thunderbird security update

RHSA-2026:3987: Important: kpatch-patch-5_14_0-611_9_1 security update

An update for kpatch-patch-5_14_0-611_9_1 is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3987: Important: kpatch-patch-5_14_0-611_9_1 security update

RHSA-2026:3980: Important: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3980: Important: thunderbird security update

RHSA-2026:3979: Important: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3979: Important: thunderbird security update

RHSA-2026:3972: Important: git-lfs security update

An update for git-lfs is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3972: Important: git-lfs security update

RHSA-2026:3974: Important: git-lfs security update

An update for git-lfs is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3974: Important: git-lfs security update

RHSA-2026:3967: Important: libvpx security update

An update for libvpx is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3967: Important: libvpx security update

RHSA-2026:3969: Important: libpng15 security update

An update for libpng15 is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3969: Important: libpng15 security update

RHSA-2026:3970: Important: rhc-worker-playbook security update

An update for rhc-worker-playbook is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3970: Important: rhc-worker-playbook security update

RHSA-2026:3966: Moderate: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3966: Moderate: kernel security update

RHSA-2026:3963: Moderate: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3963: Moderate: kernel security update

RHSA-2026:3964: Moderate: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:3964: Moderate: kernel-rt security update