==========================================================================
Ubuntu Security Notice USN-7704-1
August 20, 2025

linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop,
linux-hwe-5.15, linux-ibm-5.15, linux-intel-iot-realtime,
linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15,
linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx,
linux-oracle-5.15, linux-realtime, linux-xilinx-zynqmp vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 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-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms
- linux-lowlatency: Linux low latency kernel
- linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems
- linux-nvidia-tegra-igx: Linux kernel for NVIDIA Tegra IGX systems
- linux-realtime: Linux kernel for Real-time systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-intel-iotg-5.15: Linux kernel for Intel IoT platforms
- linux-lowlatency-hwe-5.15: Linux low latency kernel
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems
- linux-oracle-5.15: Linux kernel for Oracle Cloud systems

Details:

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;
   - Arm Firmware Framework for ARMv8-A(FFA);
   - Multiple devices driver;
   - Media drivers;
   - Network drivers;
   - NVDIMM (Non-Volatile Memory Device) drivers;
   - NVME drivers;
   - x86 platform drivers;
   - TCM subsystem;
   - Virtio drivers;
   - File systems infrastructure;
   - SMB network file system;
   - LZO compression library;
   - Digital Audio (PCM) driver;
   - Tracing infrastructure;
   - Padata parallel execution mechanism;
   - CAN network layer;
   - Networking core;
   - TIPC protocol;
   - ALSA framework;
(CVE-2025-38079, CVE-2025-38048, CVE-2025-38075, CVE-2025-38077,
CVE-2025-38035, CVE-2025-38037, CVE-2025-38034, CVE-2025-38058,
CVE-2025-38004, CVE-2025-38031, CVE-2025-38078, CVE-2025-38044,
CVE-2025-38066, CVE-2025-38052, CVE-2025-38043, CVE-2025-38065,
CVE-2025-38003, CVE-2025-38061, CVE-2025-38051, CVE-2025-38072,
CVE-2025-38068)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   linux-image-5.15.0-1032-nvidia-tegra-igx  5.15.0-1032.32
   linux-image-5.15.0-1032-nvidia-tegra-igx-rt  5.15.0-1032.32
   linux-image-5.15.0-1043-nvidia-tegra  5.15.0-1043.43
   linux-image-5.15.0-1043-nvidia-tegra-rt  5.15.0-1043.43
   linux-image-5.15.0-1054-xilinx-zynqmp  5.15.0-1054.58
   linux-image-5.15.0-1073-gkeop   5.15.0-1073.81
   linux-image-5.15.0-1083-intel-iot-realtime  5.15.0-1083.85
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1090-aws     5.15.0-1090.97
   linux-image-5.15.0-1090-aws-64k  5.15.0-1090.97
   linux-image-5.15.0-1090-gcp     5.15.0-1090.99
   linux-image-5.15.0-1090-realtime  5.15.0-1090.99
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-generic  5.15.0-152.162
   linux-image-5.15.0-152-generic-64k  5.15.0-152.162
   linux-image-5.15.0-152-generic-lpae  5.15.0-152.162
   linux-image-5.15.0-152-lowlatency  5.15.0-152.162
   linux-image-5.15.0-152-lowlatency-64k  5.15.0-152.162
   linux-image-aws-5.15            5.15.0.1090.93
   linux-image-aws-64k-5.15        5.15.0.1090.93
   linux-image-aws-64k-lts-22.04   5.15.0.1090.93
   linux-image-aws-lts-22.04       5.15.0.1090.93
   linux-image-gcp-5.15            5.15.0.1090.86
   linux-image-gcp-lts-22.04       5.15.0.1090.86
   linux-image-generic             5.15.0.152.152
   linux-image-generic-5.15        5.15.0.152.152
   linux-image-generic-64k         5.15.0.152.152
   linux-image-generic-64k-5.15    5.15.0.152.152
   linux-image-generic-lpae        5.15.0.152.152
   linux-image-generic-lpae-5.15   5.15.0.152.152
   linux-image-gkeop               5.15.0.1073.72
   linux-image-gkeop-5.15          5.15.0.1073.72
   linux-image-intel-iot-realtime  5.15.0.1083.87
                                   Available with Ubuntu Pro
   linux-image-intel-iot-realtime-5.15  5.15.0.1083.87
                                   Available with Ubuntu Pro
   linux-image-lowlatency          5.15.0.152.133
   linux-image-lowlatency-5.15     5.15.0.152.133
   linux-image-lowlatency-64k      5.15.0.152.133
   linux-image-lowlatency-64k-5.15  5.15.0.152.133
   linux-image-nvidia-tegra        5.15.0.1043.43
   linux-image-nvidia-tegra-5.15   5.15.0.1043.43
   linux-image-nvidia-tegra-igx    5.15.0.1032.34
   linux-image-nvidia-tegra-igx-5.15  5.15.0.1032.34
   linux-image-nvidia-tegra-igx-rt  5.15.0.1032.34
   linux-image-nvidia-tegra-igx-rt-5.15  5.15.0.1032.34
   linux-image-nvidia-tegra-rt     5.15.0.1043.43
   linux-image-nvidia-tegra-rt-5.15  5.15.0.1043.43
   linux-image-realtime            5.15.0.1090.94
                                   Available with Ubuntu Pro
   linux-image-realtime-5.15       5.15.0.1090.94
                                   Available with Ubuntu Pro
   linux-image-virtual             5.15.0.152.152
   linux-image-virtual-5.15        5.15.0.152.152
   linux-image-xilinx-zynqmp       5.15.0.1054.57
   linux-image-xilinx-zynqmp-5.15  5.15.0.1054.57

Ubuntu 20.04 LTS
   linux-image-5.15.0-1043-nvidia-tegra  5.15.0-1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1043-nvidia-tegra-rt  5.15.0-1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1083-ibm     5.15.0-1083.86~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1085-intel-iotg  5.15.0-1085.91~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1088-oracle  5.15.0-1088.94~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1090-aws     5.15.0-1090.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1090-gcp     5.15.0-1090.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-generic  5.15.0-152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-generic-64k  5.15.0-152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-generic-lpae  5.15.0-152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-lowlatency  5.15.0-152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-152-lowlatency-64k  5.15.0-152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 5.15.0.1090.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-aws-5.15            5.15.0.1090.97~20.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp                 5.15.0.1090.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp-5.15            5.15.0.1090.99~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-5.15        5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-64k-5.15    5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-64k-hwe-20.04  5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-hwe-20.04   5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-lpae-5.15   5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-lpae-hwe-20.04  5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-ibm                 5.15.0.1083.86~20.04.1
                                   Available with Ubuntu Pro
   linux-image-ibm-5.15            5.15.0.1083.86~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel               5.15.0.1085.91~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel-iotg          5.15.0.1085.91~20.04.1
                                   Available with Ubuntu Pro
   linux-image-intel-iotg-5.15     5.15.0.1085.91~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-5.15     5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-5.15  5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-hwe-20.04  5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra        5.15.0.1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-5.15   5.15.0.1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-rt     5.15.0.1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-nvidia-tegra-rt-5.15  5.15.0.1043.43~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04           5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04b          5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04c          5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oem-20.04d          5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle              5.15.0.1088.94~20.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle-5.15         5.15.0.1088.94~20.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-5.15        5.15.0.152.162~20.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-hwe-20.04   5.15.0.152.162~20.04.1
                                   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-7704-1
   CVE-2025-38003, CVE-2025-38004, CVE-2025-38031, CVE-2025-38034,
   CVE-2025-38035, CVE-2025-38037, CVE-2025-38043, CVE-2025-38044,
   CVE-2025-38048, CVE-2025-38051, CVE-2025-38052, CVE-2025-38058,
   CVE-2025-38061, CVE-2025-38065, CVE-2025-38066, CVE-2025-38068,
   CVE-2025-38072, CVE-2025-38075, CVE-2025-38077, CVE-2025-38078,
   CVE-2025-38079

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-152.162
   https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1090.97
   https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1090.99
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1073.81
   
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-152.162
   https://launchpad.net/ubuntu/+source/linux-nvidia-tegra/5.15.0-1043.43
   https://launchpad.net/ubuntu/+source/linux-nvidia-tegra-igx/5.15.0-1032.32
   
   https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.15.0-1054.58