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[USN-8493-1] Linux kernel vulnerabilities
Posted on 01 July 2026
Ubuntu Security
==========================================================================Ubuntu Security Notice USN-8493-1
July 01, 2026

linux, linux-aws, linux-aws-5.15, linux-aws-fips, linux-azure,
linux-azure-5.15, linux-azure-fde-5.15, linux-fips, linux-gcp,
linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm,
linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-kvm,
linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia,
linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx,
linux-oracle, linux-realtime 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-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- 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-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms
- linux-intel-iotg: Linux kernel for Intel IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems
- linux-nvidia-tegra-igx: Linux kernel for NVIDIA Tegra IGX systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-realtime: Linux kernel for Real-time systems
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-lowlatency-hwe-5.15: Linux low latency kernel
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra 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:
- RISC-V architecture;
- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- IPv6 networking;
- Tracing infrastructure;
- Timer subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- Ceph Core library;
- IPv4 networking;
- MAC80211 subsystem;
- Multipath TCP;
- Netfilter;
- RxRPC session sockets;
- SMC sockets;
- Sun RPC protocol;
- X.25 network layer;
- AMD SoC Alsa drivers;
- KVM subsystem;
(CVE-2022-48816, CVE-2023-53673, CVE-2025-37778, CVE-2025-37822,
CVE-2025-37924, CVE-2025-38201, CVE-2025-40082, CVE-2025-68214,
CVE-2025-68263, CVE-2025-71089, CVE-2025-71220, CVE-2025-71222,
CVE-2025-71224, CVE-2026-23176, CVE-2026-23180, CVE-2026-23182,
CVE-2026-23190, CVE-2026-23193, CVE-2026-23198, CVE-2026-23202,
CVE-2026-23206, CVE-2026-23216, CVE-2026-23256, CVE-2026-23257,
CVE-2026-23258, CVE-2026-23262, CVE-2026-23272, CVE-2026-23278,
CVE-2026-23428, CVE-2026-23450, CVE-2026-23455, CVE-2026-31402,
CVE-2026-31418, CVE-2026-31478, CVE-2026-31607, CVE-2026-31637,
CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,
CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-43011,
CVE-2026-43037, CVE-2026-43038, CVE-2026-43071, CVE-2026-43114,
CVE-2026-43117, CVE-2026-43186, CVE-2026-43304, CVE-2026-43341,
CVE-2026-43383, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,
CVE-2026-43493, CVE-2026-43501, CVE-2026-45988, CVE-2026-46043,
CVE-2026-46119, CVE-2026-46135, CVE-2026-46195, CVE-2026-46243)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1052-nvidia-tegra-igx 5.15.0-1052.52
linux-image-5.15.0-1052-nvidia-tegra-igx-rt 5.15.0-1052.52
linux-image-5.15.0-1063-nvidia-tegra 5.15.0-1063.63
linux-image-5.15.0-1063-nvidia-tegra-rt 5.15.0-1063.63
linux-image-5.15.0-1094-gkeop 5.15.0-1094.102
linux-image-5.15.0-1103-intel-iot-realtime 5.15.0-1103.105
Available with Ubuntu Pro
linux-image-5.15.0-1103-kvm 5.15.0-1103.108
linux-image-5.15.0-1105-ibm 5.15.0-1105.109
linux-image-5.15.0-1106-intel-iotg 5.15.0-1106.112
linux-image-5.15.0-1106-nvidia 5.15.0-1106.107
linux-image-5.15.0-1106-nvidia-lowlatency 5.15.0-1106.107
linux-image-5.15.0-1107-gke 5.15.0-1107.113
linux-image-5.15.0-1108-oracle 5.15.0-1108.114
linux-image-5.15.0-1110-realtime 5.15.0-1110.119
Available with Ubuntu Pro
linux-image-5.15.0-1111-aws 5.15.0-1111.118
linux-image-5.15.0-1111-aws-64k 5.15.0-1111.118
linux-image-5.15.0-1111-aws-fips 5.15.0-1111.118+fips1
Available with Ubuntu Pro
linux-image-5.15.0-1111-gcp 5.15.0-1111.121
linux-image-5.15.0-1111-gcp-fips 5.15.0-1111.121+fips1
Available with Ubuntu Pro
linux-image-5.15.0-1116-azure 5.15.0-1116.125
linux-image-5.15.0-183-lowlatency 5.15.0-183.193
linux-image-5.15.0-183-lowlatency-64k 5.15.0-183.193
linux-image-5.15.0-185-fips 5.15.0-185.195+fips1
Available with Ubuntu Pro
linux-image-5.15.0-185-generic 5.15.0-185.195
linux-image-5.15.0-185-generic-64k 5.15.0-185.195
linux-image-5.15.0-185-generic-lpae 5.15.0-185.195
linux-image-aws-5.15 5.15.0.1111.114
linux-image-aws-64k-5.15 5.15.0.1111.114
linux-image-aws-64k-lts-22.04 5.15.0.1111.114
linux-image-aws-fips 5.15.0.1111.107
Available with Ubuntu Pro
linux-image-aws-fips-5.15 5.15.0.1111.107
Available with Ubuntu Pro
linux-image-aws-lts-22.04 5.15.0.1111.114
linux-image-azure-5.15 5.15.0.1116.114
linux-image-azure-lts-22.04 5.15.0.1116.114
linux-image-fips 5.15.0.185.108
Available with Ubuntu Pro
linux-image-fips-5.15 5.15.0.185.108
Available with Ubuntu Pro
linux-image-gcp-5.15 5.15.0.1111.108
linux-image-gcp-fips 5.15.0.1111.101
Available with Ubuntu Pro
linux-image-gcp-fips-5.15 5.15.0.1111.101
Available with Ubuntu Pro
linux-image-gcp-lts-22.04 5.15.0.1111.108
linux-image-generic 5.15.0.185.166
linux-image-generic-5.15 5.15.0.185.166
linux-image-generic-64k 5.15.0.185.166
linux-image-generic-64k-5.15 5.15.0.185.166
linux-image-generic-lpae 5.15.0.185.166
linux-image-generic-lpae-5.15 5.15.0.185.166
linux-image-gke 5.15.0.1107.106
linux-image-gke-5.15 5.15.0.1107.106
linux-image-gkeop 5.15.0.1094.93
linux-image-gkeop-5.15 5.15.0.1094.93
linux-image-ibm 5.15.0.1105.102
linux-image-ibm-5.15 5.15.0.1105.102
linux-image-intel-iot-realtime 5.15.0.1103.107
Available with Ubuntu Pro
linux-image-intel-iot-realtime-5.15 5.15.0.1103.107
Available with Ubuntu Pro
linux-image-intel-iotg 5.15.0.1106.105
linux-image-intel-iotg-5.15 5.15.0.1106.105
linux-image-kvm 5.15.0.1103.99
linux-image-kvm-5.15 5.15.0.1103.99
linux-image-lowlatency 5.15.0.183.154
linux-image-lowlatency-5.15 5.15.0.183.154
linux-image-lowlatency-64k 5.15.0.183.154
linux-image-lowlatency-64k-5.15 5.15.0.183.154
linux-image-nvidia 5.15.0.1106.106
linux-image-nvidia-5.15 5.15.0.1106.106
linux-image-nvidia-lowlatency 5.15.0.1106.106
linux-image-nvidia-lowlatency-5.15 5.15.0.1106.106
linux-image-nvidia-tegra 5.15.0.1063.63
linux-image-nvidia-tegra-5.15 5.15.0.1063.63
linux-image-nvidia-tegra-igx 5.15.0.1052.54
linux-image-nvidia-tegra-igx-5.15 5.15.0.1052.54
linux-image-nvidia-tegra-igx-rt 5.15.0.1052.54
linux-image-nvidia-tegra-igx-rt-5.15 5.15.0.1052.54
linux-image-nvidia-tegra-rt 5.15.0.1063.63
linux-image-nvidia-tegra-rt-5.15 5.15.0.1063.63
linux-image-oem-20.04 5.15.0.185.166
linux-image-oracle-5.15 5.15.0.1108.104
linux-image-oracle-lts-22.04 5.15.0.1108.104
linux-image-realtime 5.15.0.1110.114
Available with Ubuntu Pro
linux-image-realtime-5.15 5.15.0.1110.114
Available with Ubuntu Pro
linux-image-virtual 5.15.0.185.166
linux-image-virtual-5.15 5.15.0.185.166

Ubuntu 20.04 LTS
linux-image-5.15.0-1063-nvidia-tegra 5.15.0-1063.63~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1063-nvidia-tegra-rt 5.15.0-1063.63~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1105-ibm 5.15.0-1105.109~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1111-aws 5.15.0-1111.118~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1116-azure 5.15.0-1116.125~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1116-azure-fde 5.15.0-1116.125~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-183-lowlatency 5.15.0-183.193~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-183-lowlatency-64k 5.15.0-183.193~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-185-generic 5.15.0-185.195~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-185-generic-64k 5.15.0-185.195~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-185-generic-lpae 5.15.0-185.195~20.04.1
Available with Ubuntu Pro
linux-image-aws 5.15.0.1111.118~20.04.1
Available with Ubuntu Pro
linux-image-aws-5.15 5.15.0.1111.118~20.04.1
Available with Ubuntu Pro
linux-image-azure 5.15.0.1116.125~20.04.1
Available with Ubuntu Pro
linux-image-azure-5.15 5.15.0.1116.125~20.04.1
Available with Ubuntu Pro
linux-image-azure-cvm 5.15.0.1116.125~20.04.1
Available with Ubuntu Pro
linux-image-azure-fde 5.15.0.1116.125~20.04.1
Available with Ubuntu Pro
linux-image-azure-fde-5.15 5.15.0.1116.125~20.04.1
Available with Ubuntu Pro
linux-image-generic-5.15 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-5.15 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-hwe-20.04 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-20.04 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-5.15 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-hwe-20.04 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-ibm 5.15.0.1105.109~20.04.1
Available with Ubuntu Pro
linux-image-ibm-5.15 5.15.0.1105.109~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-5.15 5.15.0.183.193~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-64k-5.15 5.15.0.183.193~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-64k-hwe-20.04 5.15.0.183.193~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-20.04 5.15.0.183.193~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra 5.15.0.1063.63~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-5.15 5.15.0.1063.63~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt 5.15.0.1063.63~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt-5.15 5.15.0.1063.63~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04b 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04c 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04d 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-virtual-5.15 5.15.0.185.195~20.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-20.04 5.15.0.185.195~20.04.1
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-8493-1
CVE-2022-48816, CVE-2023-53673, CVE-2025-37778, CVE-2025-37822,
CVE-2025-37924, CVE-2025-38201, CVE-2025-40082, CVE-2025-68214,
CVE-2025-68263, CVE-2025-71089, CVE-2025-71220, CVE-2025-71222,
CVE-2025-71224, CVE-2026-23176, CVE-2026-23180, CVE-2026-23182,
CVE-2026-23190, CVE-2026-23193, CVE-2026-23198, CVE-2026-23202,
CVE-2026-23206, CVE-2026-23216, CVE-2026-23256, CVE-2026-23257,
CVE-2026-23258, CVE-2026-23262, CVE-2026-23272, CVE-2026-23278,
CVE-2026-23428, CVE-2026-23450, CVE-2026-23455, CVE-2026-31402,
CVE-2026-31418, CVE-2026-31478, CVE-2026-31607, CVE-2026-31637,
CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,
CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-43011,
CVE-2026-43037, CVE-2026-43038, CVE-2026-43071, CVE-2026-43114,
CVE-2026-43117, CVE-2026-43186, CVE-2026-43304, CVE-2026-43341,
CVE-2026-43383, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,
CVE-2026-43493, CVE-2026-43501, CVE-2026-45988, CVE-2026-46043,
CVE-2026-46119, CVE-2026-46135, CVE-2026-46195, CVE-2026-46243

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.15.0-185.195
https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1111.118
https://launchpad.net/ubuntu/+source/linux-aws-fips/5.15.0-1111.118+fips1
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1116.125
https://launchpad.net/ubuntu/+source/linux-fips/5.15.0-185.195+fips1
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1111.121
https://launchpad.net/ubuntu/+source/linux-gcp-fips/5.15.0-1111.121+fips1
https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1107.113
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1094.102
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1105.109
https://launchpad.net/ubuntu/+source/linux-intel-iot-realtime/5.15.0-1103.105
https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1106.112
https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1103.108
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-183.193
https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1106.107
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra/5.15.0-1063.63
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra-igx/5.15.0-1052.52
https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1108.114
https://launchpad.net/ubuntu/+source/linux-realtime/5.15.0-1110.119

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