CVE-2026-31431 · cross-distro fix matrix

CVE-2026-31431: It was discovered that the Linux kernel algif_aead module contained a logic

Affects 9 Linux releases across 26 (distro × package) combinations. First disclosed: 2026-04-30.

Fix per ecosystem

Each block below is a distro release where CVE-2026-31431 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

kmod→ fixed in29-1ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y kmod

libkmod-dev→ fixed in29-1ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y libkmod-dev

libkmod2→ fixed in29-1ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y libkmod2

Ubuntu noble

Source: Ubuntu USN

kmod→ fixed in31+20240202-2ubuntu7.2USN-8226-1
```
sudo apt-get install --only-upgrade -y kmod
```
libkmod-dev→ fixed in31+20240202-2ubuntu7.2USN-8226-1
```
sudo apt-get install --only-upgrade -y libkmod-dev
```
libkmod2→ fixed in31+20240202-2ubuntu7.2USN-8226-1
```
sudo apt-get install --only-upgrade -y libkmod2
```

Ubuntu questing

Source: Ubuntu USN

kmod→ fixed in34.2-2ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y kmod

libkmod-dev→ fixed in34.2-2ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y libkmod-dev

libkmod2→ fixed in34.2-2ubuntu1.1USN-8226-1

sudo apt-get install --only-upgrade -y libkmod2

Ubuntu bionic

Source: Ubuntu USN

kmod→ fixed in24-1ubuntu3.5+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y kmod
```
libkmod-dev→ fixed in24-1ubuntu3.5+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod-dev
```
libkmod2→ fixed in24-1ubuntu3.5+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod2
```
module-init-tools→ fixed in24-1ubuntu3.5+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y module-init-tools
```

Ubuntu focal

Source: Ubuntu USN

kmod→ fixed in27-1ubuntu2.1+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y kmod
```
libkmod-dev→ fixed in27-1ubuntu2.1+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod-dev
```
libkmod2→ fixed in27-1ubuntu2.1+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod2
```

Ubuntu trusty

Source: Ubuntu USN

kmod→ fixed in15-0ubuntu7+esm1USN-8226-2

sudo apt-get install --only-upgrade -y kmod

libkmod-dev→ fixed in15-0ubuntu7+esm1USN-8226-2

sudo apt-get install --only-upgrade -y libkmod-dev

libkmod2→ fixed in15-0ubuntu7+esm1USN-8226-2

sudo apt-get install --only-upgrade -y libkmod2

module-init-tools→ fixed in15-0ubuntu7+esm1USN-8226-2

sudo apt-get install --only-upgrade -y module-init-tools

Ubuntu xenial

Source: Ubuntu USN

kmod→ fixed in22-1ubuntu5.2+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y kmod
```
libkmod-dev→ fixed in22-1ubuntu5.2+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod-dev
```
libkmod2→ fixed in22-1ubuntu5.2+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y libkmod2
```
module-init-tools→ fixed in22-1ubuntu5.2+esm1USN-8226-2
```
sudo apt-get install --only-upgrade -y module-init-tools
```

Debian bookworm

Source: Debian Security Tracker

linux→ fixed in6.1.170-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y linux
```

Debian trixie

Source: Debian Security Tracker

linux→ fixed in6.12.85-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y linux
```

Are YOU affected by CVE-2026-31431?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2026-31431dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

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