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Red Hat recently pushed a large collection of security advisories that address vulnerabilities across several Enterprise Linux releases. You will want to install the critical kernel patch for RHEL 10 first because it closes a serious flaw that attackers could easily exploit. Most of the other notices focus on keeping essential tools like OpenSSL, Podman, BIND, and OpenShift Container Platform running safely without exposing your network to known exploits. System administrators should schedule these installations right away so their servers stay protected against emerging threats.

RHSA-2026:25190: Important: rsync security update
RHSA-2026:25381: Important: flatpak security update
RHSA-2026:25341: Important: tomcat9 update
RHSA-2026:25253: Important: runc security update
RHSA-2026:25252: Important: buildah security update
RHSA-2026:25250: Important: skopeo security update
RHSA-2026:25251: Important: containernetworking-plugins security update
RHSA-2026:25248: Important: podman security update
RHSA-2026:25239: Important: openssl security update
RHSA-2026:25237: Important: openssl security update
RHSA-2026:25222: Important: .NET 10.0 security update
RHSA-2026:25221: Important: .NET 9.0 security update
RHSA-2026:25220: Important: .NET 8.0 security update
RHSA-2026:25218: Important: kernel security update
RHSA-2026:25219: Important: redis:7 security update
RHSA-2026:25217: Important: kernel security update
RHSA-2026:25225: Important: mod_http2 security update
RHSA-2026:25227: Important: libsndfile security update
RHSA-2026:25216: Important: valkey security update
RHSA-2026:23240: Important: OpenShift Container Platform 4.21.19 bug fix and security update
RHSA-2026:24934: Important: bind9.18 security update
RHSA-2026:25214: Important: bind security update
RHSA-2026:23233: Important: OpenShift Container Platform 4.15.65 bug fix and security update
RHSA-2026:25191: Critical: kernel security update
RHSA-2026:25198: Important: libsndfile security update
RHSA-2026:25197: Important: libsndfile security update




RHSA-2026:25190: Important: rsync security update


An update for rsync is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:25190: Important: rsync security update



RHSA-2026:25381: Important: flatpak security update


An update for flatpak is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:25381: Important: flatpak security update



RHSA-2026:25341: Important: tomcat9 update


CVE-2026-24734 tomcat9: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation


RHSA-2026:25341: Important: tomcat9 update



RHSA-2026:25253: Important: runc security update


An update for runc is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-2026:25253: Important: runc security update



RHSA-2026:25252: Important: buildah security update


An update for buildah is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-2026:25252: Important: buildah security update



RHSA-2026:25250: Important: skopeo security update


An update for skopeo is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-2026:25250: Important: skopeo security update



RHSA-2026:25251: Important: containernetworking-plugins security update


An update for containernetworking-plugins is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-2026:25251: Important: containernetworking-plugins security update



RHSA-2026:25248: Important: podman security update


An update for podman is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-2026:25248: Important: podman security update



RHSA-2026:25239: Important: openssl security update


An update for openssl 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-2026:25239: Important: openssl security update



RHSA-2026:25237: Important: openssl security update


An update for openssl is now available for Red Hat Enterprise Linux 10.

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-2026:25237: Important: openssl security update



RHSA-2026:25222: Important: .NET 10.0 security update


An update for .NET 10.0 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-2026:25222: Important: .NET 10.0 security update



RHSA-2026:25221: Important: .NET 9.0 security update


An update for .NET 9.0 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-2026:25221: Important: .NET 9.0 security update



RHSA-2026:25220: Important: .NET 8.0 security update


An update for .NET 8.0 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-2026:25220: Important: .NET 8.0 security update



RHSA-2026:25218: Important: kernel security update


An update for kernel 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-2026:25218: Important: kernel security update



RHSA-2026:25219: Important: redis:7 security update


An update for the redis:7 module 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-2026:25219: Important: redis:7 security update



RHSA-2026:25217: Important: 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 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-2026:25217: Important: kernel security update



RHSA-2026:25225: Important: mod_http2 security update


An update for mod_http2 is now available for Red Hat Enterprise Linux 10.

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-2026:25225: Important: mod_http2 security update



RHSA-2026:25227: Important: libsndfile security update


An update for libsndfile 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-2026:25227: Important: libsndfile security update



RHSA-2026:25216: Important: valkey security update


An update for valkey is now available for Red Hat Enterprise Linux 10.

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-2026:25216: Important: valkey security update



RHSA-2026:23240: Important: OpenShift Container Platform 4.21.19 bug fix and security update


Red Hat OpenShift Container Platform release 4.21.19 is now available with updates to packages and images that fix several bugs and add enhancements.

This release includes a security update for Red Hat OpenShift Container Platform 4.21.

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-2026:23240: Important: OpenShift Container Platform 4.21.19 bug fix and security update



RHSA-2026:24934: Important: bind9.18 security update


An update for bind9.18 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-2026:24934: Important: bind9.18 security update



RHSA-2026:25214: Important: bind security update


An update for bind is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

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-2026:25214: Important: bind security update



RHSA-2026:23233: Important: OpenShift Container Platform 4.15.65 bug fix and security update


Red Hat OpenShift Container Platform release 4.15.65 is now available with updates to packages and images that fix several bugs and add enhancements.

This release includes a security update for Red Hat OpenShift Container Platform 4.15.

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-2026:23233: Important: OpenShift Container Platform 4.15.65 bug fix and security update



RHSA-2026:25191: Critical: kernel security update


An update for kernel is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Critical. 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-2026:25191: Critical: kernel security update



RHSA-2026:25198: Important: libsndfile security update


An update for libsndfile is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:25198: Important: libsndfile security update



RHSA-2026:25197: Important: libsndfile security update


An update for libsndfile 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-2026:25197: Important: libsndfile security update