Ubuntu USN · USN-8226-1

kmod update

Published: Thu, 30 Apr 2026 15:55

CVE-2026-31431

Summary

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

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 jammy

kmod→29-1ubuntu1.1apt_upgrade
Standard apt upgrade. Install 29-1ubuntu1.1 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→29-1ubuntu1.1apt_upgrade
Standard apt upgrade. Install 29-1ubuntu1.1 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→29-1ubuntu1.1apt_upgrade
Standard apt upgrade. Install 29-1ubuntu1.1 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→29-1ubuntu1.1apt_upgrade
Standard apt upgrade. Install 29-1ubuntu1.1 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 noble

kmod→31+20240202-2ubuntu7.2apt_upgrade
Standard apt upgrade. Install 31+20240202-2ubuntu7.2 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→31+20240202-2ubuntu7.2apt_upgrade
Standard apt upgrade. Install 31+20240202-2ubuntu7.2 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→31+20240202-2ubuntu7.2apt_upgrade
Standard apt upgrade. Install 31+20240202-2ubuntu7.2 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→31+20240202-2ubuntu7.2apt_upgrade
Standard apt upgrade. Install 31+20240202-2ubuntu7.2 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 questing

kmod→34.2-2ubuntu1.1apt_upgrade
Standard apt upgrade. Install 34.2-2ubuntu1.1 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→34.2-2ubuntu1.1apt_upgrade
Standard apt upgrade. Install 34.2-2ubuntu1.1 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→34.2-2ubuntu1.1apt_upgrade
Standard apt upgrade. Install 34.2-2ubuntu1.1 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→34.2-2ubuntu1.1apt_upgrade
Standard apt upgrade. Install 34.2-2ubuntu1.1 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.

Are YOU affected by USN-8226-1?

5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether USN-8226-1 (and any other live CVE) applies. Anonymous, no signup.

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

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References

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