Ubuntu USN · USN-8615-2

Linux kernel (Raspberry Pi) vulnerabilities

Published: Wed, 29 Jul 2026 07:43

CVE-2026-43414CVE-2026-31649CVE-2026-46243CVE-2026-31682CVE-2026-46043CVE-2026-31607CVE-2026-43503CVE-2026-45988CVE-2026-43383CVE-2026-31418CVE-2026-31637CVE-2026-43117CVE-2026-23455CVE-2026-31402CVE-2026-46119CVE-2026-46135CVE-2026-31685CVE-2026-43407CVE-2026-31659CVE-2026-43038CVE-2026-43037CVE-2026-43011CVE-2026-23272

Summary

Several security issues were fixed in the Linux kernel.

Details

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503) 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: - InfiniBand drivers; - STMicroelectronics network drivers; - NVME drivers; - SCSI subsystem; - USB over IP driver; - Network file system (NFS) server daemon; - SMB network file system; - Tracing infrastructure; - B.A.T.M.A.N. meshing protocol; - Ethernet bridge; - Ceph Core library; - IPv4 networking; - IPv6 networking; - Netfilter; - RxRPC session sockets; - X.25 network layer; (CVE-2026-23272, CVE-2026-23455, CVE-2026-31402, CVE-2026-31418, CVE-2026-31607, CVE-2026-31637, CVE-2026-31649, CVE-2026-31659, CVE-2026-31682, CVE-2026-31685, CVE-2026-43011, CVE-2026-43037, CVE-2026-43038, CVE-2026-43117, CVE-2026-43383, CVE-2026-43407, CVE-2026-43414, CVE-2026-45988, CVE-2026-46043, CVE-2026-46119, CVE-2026-46135, CVE-2026-46243)

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu bionic

linux-raspi-5.4→5.4.0-1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-5.4
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-buildinfo-5.4.0-1144-raspi→5.4.0-1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1144-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-headers-5.4.0-1144-raspi→5.4.0-1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-5.4→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-5.4
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-hwe-18.04→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-hwe-18.04-edge→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-5.4.0-1144-raspi→5.4.0-1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-5.4→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-5.4
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-hwe-18.04→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-hwe-18.04-edge→5.4.0.1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-modules-5.4.0-1144-raspi→5.4.0-1144.157~18.04.1kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-modules-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-raspi-5.4→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-5.4
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-5.4-headers-5.4.0-1144→5.4.0-1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-5.4-headers-5.4.0-1144
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-5.4-tools-5.4.0-1144→5.4.0-1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-5.4-tools-5.4.0-1144
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-hwe-18.04→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-hwe-18.04-edge→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-5.4.0-1144-raspi→5.4.0-1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-5.4.0-1144-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-5.4→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-5.4
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-hwe-18.04→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-hwe-18.04-edge→5.4.0.1144.157~18.04.1apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.157~18.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu focal

linux-raspi→5.4.0-1144.157apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-buildinfo-5.4.0-1144-raspi→5.4.0-1144.157apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1144-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-headers-5.4.0-1144-raspi→5.4.0-1144.157kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-5.4→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-5.4
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-hwe-18.04→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi-hwe-18.04-edge→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi2→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi2
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi2-hwe-18.04→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi2-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-raspi2-hwe-18.04-edge→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-headers-raspi2-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-5.4.0-1144-raspi→5.4.0-1144.157kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-5.4→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-5.4
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-hwe-18.04→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi-hwe-18.04-edge→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi2→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi2
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi2-hwe-18.04→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi2-hwe-18.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-raspi2-hwe-18.04-edge→5.4.0.1144.175kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-image-raspi2-hwe-18.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-modules-5.4.0-1144-raspi→5.4.0-1144.157kernel_reboot
Kernel package — apt-upgrade then REBOOT to load the patched kernel.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-modules-5.4.0-1144-raspi
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-raspi→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-5.4→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-5.4
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-headers-5.4.0-1144→5.4.0-1144.157apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-headers-5.4.0-1144
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-hwe-18.04→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-hwe-18.04-edge→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi-tools-5.4.0-1144→5.4.0-1144.157apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi-tools-5.4.0-1144
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi2→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi2-hwe-18.04→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi2-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-raspi2-hwe-18.04-edge→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-raspi2-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-5.4.0-1144-raspi→5.4.0-1144.157apt_upgrade
Standard apt upgrade. Install 5.4.0-1144.157 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-5.4.0-1144-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-5.4→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-5.4
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-hwe-18.04→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi-hwe-18.04-edge→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi2→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi2-hwe-18.04→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi2-hwe-18.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-raspi2-hwe-18.04-edge→5.4.0.1144.175apt_upgrade
Standard apt upgrade. Install 5.4.0.1144.175 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-raspi2-hwe-18.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8615-2?

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curl https://mindsparkstack.com/scan.sh | bash

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