Multiple critical vulnerabilities in the Red Hat Linux kernel allow remote attackers to bypass security restrictions, execute arbitrary code, manipulate data, cause denial of service, escalate privileges, and disclose sensitive information. The affected systems include Red Hat Enterprise Linux and CodeReady Linux Builder versions 8, 9, and 10 across ARM 64, IBM z Systems, Power (ppc64le), and x86_64 architectures, including their Extended Update Support and Extended Life Cycle variants.
Multiple vulnerabilities were identified in RedHat Linux Kernel. A remote attacker could exploit some of these vulnerabilities to trigger security restriction bypass, remote code execution, data manipulation, denial of service condition, elevation of privilege and sensitive information disclosure on the targeted system. Impact Denial of Service Elevation of Privilege Information Disclosure Data Manipulation Remote Code Execution Security Restriction Bypass System / Technologies affected Red Hat CodeReady Linux Builder for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for ARM 64 9 aarch64 Red Hat CodeReady Linux Builder for ARM 64 10 aarch64 Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.4 aarch64 Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.6 aarch64 Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.0 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x Red Hat CodeReady Linux Builder for IBM z Systems 10 s390x Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.4 s390x Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.6 s390x Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.0 s390x Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le Red Hat CodeReady Linux Builder for Power, little endian 10 ppc64le Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.4 ppc64le Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.6 ppc64le Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.0 ppc64le Red Hat CodeReady Linux Builder for x86_64 8 x86_64 Red Hat CodeReady Linux Builder for x86_64 9 x86_64 Red Hat CodeReady Linux Builder for x86_64 10 x86_64 Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64 Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.6 x86_64 Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.0 x86_64 Red Hat Enterprise Linux for ARM 64 8 aarch64 Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 10 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.0 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.2 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.2 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64 Red Hat Enterprise Linux for IBM z Systems 8 s390x Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems 10 s390x Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.0 s390x Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.2 s390x Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.2 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x Red Hat Enterprise Linux for Power, little endian 8 ppc64le Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.2 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le Red Hat Enterprise Linux for Real Time 8 x86_64 Red Hat Enterprise Linux for Real Time for NFV 8 x86_64 Red Hat Enterprise Linux for Real Time for x86_64 - Extended Life Cycle Support 7 x86_64 Red Hat Enterprise Linux for x86_64 8 x86_64 Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 10 x86_64 Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.8 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64 Red Hat Enterprise Linux Server - AUS 8.2 x86_64 Red Hat Enterprise Linux Server - AUS 8.4 x86_64 Red Hat Enterprise Linux Server - AUS 8.6 x86_64 Red Hat Enterprise Linux Server - AUS 9.2 x86_64 Red Hat Enterprise Linux Server - AUS 9.4 x86_64 Red Hat Enterprise Linux Server - AUS 9.6 x86_64 Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64 Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64 Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le Red Hat Enterprise Linux Server - TUS 8.6 x86_64 Red Hat Enterprise Linux Server - TUS 8.8 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.2 ppc64le Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le Solutions Before installation of the software, please visit the vendor web-site for more details. Apply fixes issued by the vendor: https://access.redhat.com/errata/RHSA-2026:28887 https://access.redhat.com/errata/RHSA-2026:33486 https://access.redhat.com/errata/RHSA-2026:33666 https://access.redhat.com/errata/RHSA-2026:33685 https://access.redhat.com/errata/RHSA-2026:33743 https://access.redhat.com/errata/RHSA-2026:33899 https://access.redhat.com/errata/RHSA-2026:33900 https://access.redhat.com/errata/RHSA-2026:34095