CVE-2026-31431 · cross-distro fix matrix

CVE-2026-31431: It was discovered that the Linux kernel algif_aead module did not properly

Affects 2 Linux releases across 50 (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 bionic

Source: Ubuntu USN

linux-azure-5.4→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-5.4
```
linux-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure
```
linux-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-5.4
```
linux-azure-5.4-cloud-tools-5.4.0-1163→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-5.4-cloud-tools-5.4.0-1163
```
linux-azure-5.4-headers-5.4.0-1163→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-5.4-headers-5.4.0-1163
```
linux-azure-5.4-tools-5.4.0-1163→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-5.4-tools-5.4.0-1163
```
linux-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-edge
```
linux-buildinfo-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1163-azure
```
linux-cloud-tools-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-cloud-tools-5.4.0-1163-azure
```
linux-cloud-tools-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-cloud-tools-azure
```
linux-cloud-tools-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-cloud-tools-azure-5.4
```
linux-cloud-tools-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-cloud-tools-azure-edge
```
linux-headers-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-headers-5.4.0-1163-azure
```
linux-headers-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-headers-azure
```
linux-headers-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-headers-azure-5.4
```
linux-headers-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-headers-azure-edge
```
linux-image-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-image-5.4.0-1163-azure
```
linux-image-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-image-azure
```
linux-image-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-image-azure-5.4
```
linux-image-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-image-azure-edge
```
linux-image-unsigned-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-image-unsigned-5.4.0-1163-azure
```
linux-modules-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-modules-5.4.0-1163-azure
```
linux-modules-extra-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-modules-extra-5.4.0-1163-azure
```
linux-modules-extra-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-modules-extra-azure
```
linux-modules-extra-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-modules-extra-azure-5.4
```
linux-modules-extra-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-modules-extra-azure-edge
```
linux-signed-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-azure
```
linux-signed-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-azure-5.4
```
linux-signed-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-azure-edge
```
linux-signed-image-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-image-azure
```
linux-signed-image-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-image-azure-5.4
```
linux-signed-image-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-signed-image-azure-edge
```
linux-tools-5.4.0-1163-azure→ fixed in5.4.0-1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-tools-5.4.0-1163-azure
```
linux-tools-azure→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-tools-azure
```
linux-tools-azure-5.4→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-tools-azure-5.4
```
linux-tools-azure-edge→ fixed in5.4.0.1163.169~18.04.1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-tools-azure-edge
```

Ubuntu focal

Source: Ubuntu USN

linux-azure→ fixed in5.4.0-1163.169USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure

linux-azure-fips→ fixed in5.4.0-1163.169+fips1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-fips
```

linux-azure-5.4→ fixed in5.4.0.1163.155USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-5.4

linux-azure-cloud-tools-5.4.0-1163→ fixed in5.4.0-1163.169USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-cloud-tools-5.4.0-1163

linux-azure-fips→ fixed in5.4.0.1163.99USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-fips

linux-azure-fips-5.4→ fixed in5.4.0.1163.99USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-fips-5.4

linux-azure-fips-cloud-tools-5.4.0-1163→ fixed in5.4.0-1163.169+fips1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-fips-cloud-tools-5.4.0-1163
```
linux-azure-fips-headers-5.4.0-1163→ fixed in5.4.0-1163.169+fips1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-fips-headers-5.4.0-1163
```
linux-azure-fips-tools-5.4.0-1163→ fixed in5.4.0-1163.169+fips1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-azure-fips-tools-5.4.0-1163
```

linux-azure-headers-5.4.0-1163→ fixed in5.4.0-1163.169USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-headers-5.4.0-1163

linux-azure-lts-20.04→ fixed in5.4.0.1163.155USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-lts-20.04

linux-azure-tools-5.4.0-1163→ fixed in5.4.0-1163.169USN-8280-2

sudo apt-get install --only-upgrade -y linux-azure-tools-5.4.0-1163

linux-buildinfo-5.4.0-1163-azure→ fixed in5.4.0-1163.169USN-8280-2

sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1163-azure

linux-buildinfo-5.4.0-1163-azure-fips→ fixed in5.4.0-1163.169+fips1USN-8280-2
```
sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1163-azure-fips
```

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

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