Ubuntu alert USN-7874-1 (linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp)
| From: | Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-7874-1] Linux kernel vulnerabilities | |
| Date: | Wed, 19 Nov 2025 14:46:22 -0300 | |
| Message-ID: | <eae14ae4-0532-4f40-b7a4-8b3ab8c11360@canonical.com> |
========================================================================== Ubuntu Security Notice USN-7874-1 November 19, 2025 linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors - linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-ibm-5.4: Linux kernel for IBM cloud systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems - linux-raspi-5.4: Linux kernel for Raspberry Pi systems Details: Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this to expose sensitive information from the host OS. (CVE-2025-40300) 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: - HSI subsystem; - I3C subsystem; - SMB network file system; - Padata parallel execution mechanism; - Timer subsystem; - Networking core; (CVE-2023-52854, CVE-2024-35867, CVE-2024-50061, CVE-2024-56664, CVE-2025-21727, CVE-2025-37838, CVE-2025-38352) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.4.0-1070-xilinx-zynqmp 5.4.0-1070.74 Available with Ubuntu Pro linux-image-5.4.0-1098-ibm 5.4.0-1098.103 Available with Ubuntu Pro linux-image-5.4.0-1135-raspi 5.4.0-1135.148 Available with Ubuntu Pro linux-image-5.4.0-1139-kvm 5.4.0-1139.148 Available with Ubuntu Pro linux-image-5.4.0-1150-oracle 5.4.0-1150.160 Available with Ubuntu Pro linux-image-5.4.0-1152-aws 5.4.0-1152.162 Available with Ubuntu Pro linux-image-5.4.0-1155-gcp 5.4.0-1155.164 Available with Ubuntu Pro linux-image-5.4.0-223-generic 5.4.0-223.243 Available with Ubuntu Pro linux-image-5.4.0-223-generic-lpae 5.4.0-223.243 Available with Ubuntu Pro linux-image-5.4.0-223-lowlatency 5.4.0-223.243 Available with Ubuntu Pro linux-image-aws-5.4 5.4.0.1152.149 Available with Ubuntu Pro linux-image-aws-lts-20.04 5.4.0.1152.149 Available with Ubuntu Pro linux-image-gcp-5.4 5.4.0.1155.157 Available with Ubuntu Pro linux-image-gcp-lts-20.04 5.4.0.1155.157 Available with Ubuntu Pro linux-image-generic 5.4.0.223.215 Available with Ubuntu Pro linux-image-generic-5.4 5.4.0.223.215 Available with Ubuntu Pro linux-image-generic-lpae 5.4.0.223.215 Available with Ubuntu Pro linux-image-generic-lpae-5.4 5.4.0.223.215 Available with Ubuntu Pro linux-image-ibm-5.4 5.4.0.1098.127 Available with Ubuntu Pro linux-image-ibm-lts-20.04 5.4.0.1098.127 Available with Ubuntu Pro linux-image-kvm 5.4.0.1139.135 Available with Ubuntu Pro linux-image-kvm-5.4 5.4.0.1139.135 Available with Ubuntu Pro linux-image-lowlatency 5.4.0.223.215 Available with Ubuntu Pro linux-image-lowlatency-5.4 5.4.0.223.215 Available with Ubuntu Pro linux-image-oem 5.4.0.223.215 Available with Ubuntu Pro linux-image-oem-osp1 5.4.0.223.215 Available with Ubuntu Pro linux-image-oracle-5.4 5.4.0.1150.144 Available with Ubuntu Pro linux-image-oracle-lts-20.04 5.4.0.1150.144 Available with Ubuntu Pro linux-image-raspi 5.4.0.1135.166 Available with Ubuntu Pro linux-image-raspi-5.4 5.4.0.1135.166 Available with Ubuntu Pro linux-image-raspi2 5.4.0.1135.166 Available with Ubuntu Pro linux-image-virtual 5.4.0.223.215 Available with Ubuntu Pro linux-image-virtual-5.4 5.4.0.223.215 Available with Ubuntu Pro linux-image-xilinx-zynqmp 5.4.0.1070.70 Available with Ubuntu Pro linux-image-xilinx-zynqmp-5.4 5.4.0.1070.70 Available with Ubuntu Pro Ubuntu 18.04 LTS linux-image-5.4.0-1098-ibm 5.4.0-1098.103~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1135-raspi 5.4.0-1135.148~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1150-oracle 5.4.0-1150.160~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1152-aws 5.4.0-1152.162~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-1155-gcp 5.4.0-1155.164~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-223-generic 5.4.0-223.243~18.04.1 Available with Ubuntu Pro linux-image-5.4.0-223-lowlatency 5.4.0-223.243~18.04.1 Available with Ubuntu Pro linux-image-aws 5.4.0.1152.162~18.04.1 Available with Ubuntu Pro linux-image-aws-5.4 5.4.0.1152.162~18.04.1 Available with Ubuntu Pro linux-image-gcp 5.4.0.1155.164~18.04.1 Available with Ubuntu Pro linux-image-gcp-5.4 5.4.0.1155.164~18.04.1 Available with Ubuntu Pro linux-image-generic-5.4 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-generic-hwe-18.04 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-ibm 5.4.0.1098.103~18.04.1 Available with Ubuntu Pro linux-image-ibm-5.4 5.4.0.1098.103~18.04.1 Available with Ubuntu Pro linux-image-lowlatency-5.4 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-lowlatency-hwe-18.04 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-oem 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-oem-osp1 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-oracle 5.4.0.1150.160~18.04.1 Available with Ubuntu Pro linux-image-oracle-5.4 5.4.0.1150.160~18.04.1 Available with Ubuntu Pro linux-image-raspi-5.4 5.4.0.1135.148~18.04.1 Available with Ubuntu Pro linux-image-raspi-hwe-18.04 5.4.0.1135.148~18.04.1 Available with Ubuntu Pro linux-image-snapdragon-5.4 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-snapdragon-hwe-18.04 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-virtual-5.4 5.4.0.223.243~18.04.1 Available with Ubuntu Pro linux-image-virtual-hwe-18.04 5.4.0.223.243~18.04.1 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-7874-1 CVE-2023-52854, CVE-2024-35867, CVE-2024-50061, CVE-2024-56664, CVE-2025-21727, CVE-2025-37838, CVE-2025-38352, CVE-2025-40300
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