Ubuntu USN · USN-8226-2

kmod update

Published: Thu, 30 Apr 2026 16:19

CVE-2026-31431

Summary

kmod has been updated to block loading of the algif_aead kernel module.

Details

USN-8226-1 added a mitigation to kmod to disable loading the algif_aead module. This update adds the same mitigation to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that the Linux kernel algif_aead module contained a logic flaw allowing a local attacker to escalate privileges to root. This update to the kmod package disables loading the algif_aead module as a measure to mitigate the issue until kernel updates are made available. See the following URL for more information https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

Recommended actions per Ubuntu release

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

Ubuntu bionic

kmod→24-1ubuntu3.5+esm1apt_upgrade
Standard apt upgrade. Install 24-1ubuntu3.5+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
kmod→24-1ubuntu3.5+esm1apt_upgrade
Standard apt upgrade. Install 24-1ubuntu3.5+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod-dev→24-1ubuntu3.5+esm1apt_upgrade
Standard apt upgrade. Install 24-1ubuntu3.5+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod2→24-1ubuntu3.5+esm1apt_upgrade
Standard apt upgrade. Install 24-1ubuntu3.5+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
module-init-tools→24-1ubuntu3.5+esm1apt_upgrade
Standard apt upgrade. Install 24-1ubuntu3.5+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y module-init-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu focal

kmod→27-1ubuntu2.1+esm1apt_upgrade
Standard apt upgrade. Install 27-1ubuntu2.1+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
kmod→27-1ubuntu2.1+esm1apt_upgrade
Standard apt upgrade. Install 27-1ubuntu2.1+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod-dev→27-1ubuntu2.1+esm1apt_upgrade
Standard apt upgrade. Install 27-1ubuntu2.1+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod2→27-1ubuntu2.1+esm1apt_upgrade
Standard apt upgrade. Install 27-1ubuntu2.1+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu trusty

kmod→15-0ubuntu7+esm1apt_upgrade
Standard apt upgrade. Install 15-0ubuntu7+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
kmod→15-0ubuntu7+esm1apt_upgrade
Standard apt upgrade. Install 15-0ubuntu7+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod-dev→15-0ubuntu7+esm1apt_upgrade
Standard apt upgrade. Install 15-0ubuntu7+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod2→15-0ubuntu7+esm1apt_upgrade
Standard apt upgrade. Install 15-0ubuntu7+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
module-init-tools→15-0ubuntu7+esm1apt_upgrade
Standard apt upgrade. Install 15-0ubuntu7+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y module-init-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu xenial

kmod→22-1ubuntu5.2+esm1apt_upgrade
Standard apt upgrade. Install 22-1ubuntu5.2+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
kmod→22-1ubuntu5.2+esm1apt_upgrade
Standard apt upgrade. Install 22-1ubuntu5.2+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y kmod
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod-dev→22-1ubuntu5.2+esm1apt_upgrade
Standard apt upgrade. Install 22-1ubuntu5.2+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libkmod2→22-1ubuntu5.2+esm1apt_upgrade
Standard apt upgrade. Install 22-1ubuntu5.2+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libkmod2
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
module-init-tools→22-1ubuntu5.2+esm1apt_upgrade
Standard apt upgrade. Install 22-1ubuntu5.2+esm1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y module-init-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8226-2?

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