========================================================================== Ubuntu Security Notice USN-8280-1 May 19, 2026 linux, linux-aws, linux-aws-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS - linux-bluefield: Linux kernel for NVIDIA BlueField platforms - linux-fips: Linux kernel with FIPS - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with FIPS - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-ibm-5.4: Linux kernel for IBM cloud systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems Details: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Packet sockets; - TLS protocol; (CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.4.0-1077-xilinx-zynqmp 5.4.0-1077.81 Available with Ubuntu Pro linux-image-5.4.0-1105-ibm 5.4.0-1105.110 Available with Ubuntu Pro linux-image-5.4.0-1118-bluefield 5.4.0-1118.125 Available with Ubuntu Pro linux-image-5.4.0-1133-fips 5.4.0-1133.143 Available with Ubuntu Pro linux-image-5.4.0-1146-kvm 5.4.0-1146.155 Available with Ubuntu Pro linux-image-5.4.0-1157-oracle 5.4.0-1157.167 Available with Ubuntu Pro linux-image-5.4.0-1159-aws 5.4.0-1159.169 Available with Ubuntu Pro linux-image-5.4.0-1159-aws-fips 5.4.0-1159.169+fips1 Available with Ubuntu Pro linux-image-5.4.0-1162-gcp 5.4.0-1162.171 Available with Ubuntu Pro linux-image-5.4.0-1162-gcp-fips 5.4.0-1162.171+fips1 Available with Ubuntu Pro linux-image-5.4.0-230-generic 5.4.0-230.250 Available with Ubuntu Pro linux-image-5.4.0-230-generic-lpae 5.4.0-230.250 Available with Ubuntu Pro linux-image-5.4.0-230-lowlatency 5.4.0-230.250 Available with Ubuntu Pro linux-image-aws-5.4 5.4.0.1159.156 Available with Ubuntu Pro linux-image-aws-fips 5.4.0.1159.106 Available with Ubuntu Pro linux-image-aws-fips-5.4 5.4.0.1159.106 Available with Ubuntu Pro linux-image-aws-lts-20.04 5.4.0.1159.156 Available with Ubuntu Pro linux-image-bluefield 5.4.0.1118.114 Available with Ubuntu Pro linux-image-bluefield-5.4 5.4.0.1118.114 Available with Ubuntu Pro linux-image-fips 5.4.0.1133.130 Available with Ubuntu Pro linux-image-fips-5.4 5.4.0.1133.130 Available with Ubuntu Pro linux-image-gcp-5.4 5.4.0.1162.164 Available with Ubuntu Pro linux-image-gcp-fips 5.4.0.1162.104 Available with Ubuntu Pro linux-image-gcp-fips-5.4 5.4.0.1162.104 Available with Ubuntu Pro linux-image-gcp-lts-20.04 5.4.0.1162.164 Available with Ubuntu Pro linux-image-generic 5.4.0.230.222 Available with Ubuntu Pro linux-image-generic-5.4 5.4.0.230.222 Available with Ubuntu Pro linux-image-generic-lpae 5.4.0.230.222 Available with Ubuntu Pro linux-image-generic-lpae-5.4 5.4.0.230.222 Available with Ubuntu Pro linux-image-ibm-5.4 5.4.0.1105.134 Available with Ubuntu Pro linux-image-ibm-lts-20.04 5.4.0.1105.134 Available with Ubuntu Pro linux-image-kvm 5.4.0.1146.142 Available with Ubuntu Pro linux-image-kvm-5.4 5.4.0.1146.142 Available with Ubuntu Pro linux-image-lowlatency 5.4.0.230.222 Available with Ubuntu Pro linux-image-lowlatency-5.4 5.4.0.230.222 Available with Ubuntu Pro linux-image-oem 5.4.0.230.222 Available with Ubuntu Pro linux-image-oem-osp1 5.4.0.230.222 Available with Ubuntu Pro linux-image-oracle-5.4 5.4.0.1157.151 Available with Ubuntu Pro linux-image-oracle-lts-20.04 5.4.0.1157.151 Available with Ubuntu Pro linux-image-virtual 5.4.0.230.222 Available with Ubuntu Pro linux-image-virtual-5.4 5.4.0.230.222 Available with Ubuntu Pro linux-image-xilinx-zynqmp 5.4.0.1077.77 Available with Ubuntu Pro linux-image-xilinx-zynqmp-5.4 5.4.0.1077.77 Available with Ubuntu Pro Ubuntu 18.04 LTS linux-image-5.4.0-1105-ibm 5.4.0-1105.110~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1157-oracle 5.4.0-1157.167~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1162-gcp 5.4.0-1162.171~18.04.1 Available with Ubuntu Pro linux-image-gcp 5.4.0.1162.171~18.04.1 Available with Ubuntu Pro linux-image-gcp-5.4 5.4.0.1162.171~18.04.1 Available with Ubuntu Pro linux-image-ibm 5.4.0.1105.110~18.04.1 Available with Ubuntu Pro linux-image-ibm-5.4 5.4.0.1105.110~18.04.1 Available with Ubuntu Pro linux-image-oracle 5.4.0.1157.167~18.04.1 Available with Ubuntu Pro linux-image-oracle-5.4 5.4.0.1157.167~18.04.1 Available with Ubuntu Pro After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-8280-1 CVE-2026-31431, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078
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