Ubuntu USN · USN-8305-2

Linux kernel (Low Latency) vulnerabilities

Published: Tue, 26 May 2026 19:08

CVE-2026-31419CVE-2026-31504CVE-2026-43078CVE-2026-31431CVE-2026-43033CVE-2026-43077CVE-2026-31533

Summary

Several security issues were fixed in the Linux kernel.

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; - Ethernet bonding driver; - Packet sockets; - TLS protocol; (CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078)

Recommended actions per Ubuntu release

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

Ubuntu focal

linux-lowlatency-hwe-5.15→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-buildinfo-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-buildinfo-5.15.0-179-lowlatency
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-buildinfo-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-buildinfo-5.15.0-179-lowlatency-64k
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-cloud-tools-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-cloud-tools-5.15.0-179-lowlatency
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-cloud-tools-lowlatency-5.15→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-cloud-tools-lowlatency-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-cloud-tools-lowlatency-hwe-20.04→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-cloud-tools-lowlatency-hwe-20.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-cloud-tools-lowlatency-hwe-20.04-edge→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-cloud-tools-lowlatency-hwe-20.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-headers-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency-64k
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-5.15→5.15.0.179.189~20.04.1kernel_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-lowlatency-5.15
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-64k-5.15→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-5.15
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-64k-hwe-20.04→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-hwe-20.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-64k-hwe-20.04-edge→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-hwe-20.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-hwe-20.04→5.15.0.179.189~20.04.1kernel_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-lowlatency-hwe-20.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-headers-lowlatency-hwe-20.04-edge→5.15.0.179.189~20.04.1kernel_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-lowlatency-hwe-20.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency-64k
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-5.15→5.15.0.179.189~20.04.1kernel_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-lowlatency-5.15
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-64k-5.15→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-5.15
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-64k-hwe-20.04→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-hwe-20.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-64k-hwe-20.04-edge→5.15.0.179.189~20.04.1kernel_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-lowlatency-64k-hwe-20.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-hwe-20.04→5.15.0.179.189~20.04.1kernel_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-lowlatency-hwe-20.04
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-lowlatency-hwe-20.04-edge→5.15.0.179.189~20.04.1kernel_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-lowlatency-hwe-20.04-edge
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-unsigned-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1kernel_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-unsigned-5.15.0-179-lowlatency
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-image-unsigned-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1kernel_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-unsigned-5.15.0-179-lowlatency-64k
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-lowlatency-5.15→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-64k-5.15→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-64k-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-64k-hwe-20.04→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-64k-hwe-20.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-64k-hwe-20.04-edge→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-64k-hwe-20.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-hwe-20.04→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-20.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-hwe-20.04-edge→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-20.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-hwe-5.15-cloud-tools-5.15.0-179→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-5.15-cloud-tools-5.15.0-179
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-hwe-5.15-headers-5.15.0-179→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-5.15-headers-5.15.0-179
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-lowlatency-hwe-5.15-tools-5.15.0-179→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-lowlatency-hwe-5.15-tools-5.15.0-179
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-modules-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-modules-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1kernel_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-5.15.0-179-lowlatency-64k
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-modules-iwlwifi-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1kernel_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-iwlwifi-5.15.0-179-lowlatency
sudo reboot
```
Reboot is required. ~30-60s downtime; containers self-restart.
linux-tools-5.15.0-179-lowlatency→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-5.15.0-179-lowlatency
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-5.15.0-179-lowlatency-64k→5.15.0-179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0-179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-5.15.0-179-lowlatency-64k
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-5.15→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-64k-5.15→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-64k-5.15
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-64k-hwe-20.04→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-64k-hwe-20.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-64k-hwe-20.04-edge→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-64k-hwe-20.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-hwe-20.04→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-hwe-20.04
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
linux-tools-lowlatency-hwe-20.04-edge→5.15.0.179.189~20.04.1apt_upgrade
Standard apt upgrade. Install 5.15.0.179.189~20.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y linux-tools-lowlatency-hwe-20.04-edge
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8305-2?

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