CVE-2026-31607 · cross-distro fix matrix

CVE-2026-31607: It was discovered that the Linux kernel did not properly handle shared page

Affects 2 Linux releases across 50 (distro × package) combinations. First disclosed: 2026-04-24.

CVSS v3:CRITICAL · 9.8(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-31607 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

linux-ibm-5.4→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4
```
linux-buildinfo-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1107-ibm
```
linux-headers-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-headers-5.4.0-1107-ibm
```
linux-headers-ibm→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-headers-ibm
```
linux-headers-ibm-5.4→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-headers-ibm-5.4
```
linux-headers-ibm-edge→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-headers-ibm-edge
```
linux-ibm→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm
```
linux-ibm-5.4→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4
```
linux-ibm-5.4-cloud-tools-common→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4-cloud-tools-common
```
linux-ibm-5.4-headers-5.4.0-1107→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4-headers-5.4.0-1107
```
linux-ibm-5.4-source-5.4.0→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4-source-5.4.0
```
linux-ibm-5.4-tools-5.4.0-1107→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4-tools-5.4.0-1107
```
linux-ibm-5.4-tools-common→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-5.4-tools-common
```
linux-ibm-edge→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-ibm-edge
```
linux-image-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-image-5.4.0-1107-ibm
```
linux-image-ibm→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-image-ibm
```
linux-image-ibm-5.4→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-image-ibm-5.4
```
linux-image-ibm-edge→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-image-ibm-edge
```
linux-image-unsigned-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-image-unsigned-5.4.0-1107-ibm
```
linux-modules-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-modules-5.4.0-1107-ibm
```
linux-modules-extra-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-modules-extra-5.4.0-1107-ibm
```
linux-modules-extra-ibm→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-modules-extra-ibm
```
linux-modules-extra-ibm-5.4→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-modules-extra-ibm-5.4
```
linux-modules-extra-ibm-edge→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-modules-extra-ibm-edge
```
linux-tools-5.4.0-1107-ibm→ fixed in5.4.0-1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-tools-5.4.0-1107-ibm
```
linux-tools-ibm→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-tools-ibm
```
linux-tools-ibm-5.4→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-tools-ibm-5.4
```
linux-tools-ibm-edge→ fixed in5.4.0.1107.112~18.04.1USN-8616-1
```
sudo apt-get install --only-upgrade -y linux-tools-ibm-edge
```

Ubuntu focal

Source: Ubuntu USN

linux-ibm→ fixed in5.4.0-1107.112USN-8616-1

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

linux-buildinfo-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-buildinfo-5.4.0-1107-ibm

linux-headers-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-headers-5.4.0-1107-ibm

linux-headers-ibm-5.4→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-headers-ibm-5.4

linux-headers-ibm-lts-20.04→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-headers-ibm-lts-20.04

linux-ibm-5.4→ fixed in5.4.0.1107.136USN-8616-1

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

linux-ibm-cloud-tools-common→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-ibm-cloud-tools-common

linux-ibm-headers-5.4.0-1107→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-ibm-headers-5.4.0-1107

linux-ibm-lts-20.04→ fixed in5.4.0.1107.136USN-8616-1

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

linux-ibm-source-5.4.0→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-ibm-source-5.4.0

linux-ibm-tools-5.4.0-1107→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-ibm-tools-5.4.0-1107

linux-ibm-tools-common→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-ibm-tools-common

linux-image-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-image-5.4.0-1107-ibm

linux-image-ibm-5.4→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-image-ibm-5.4

linux-image-ibm-lts-20.04→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-image-ibm-lts-20.04

linux-image-unsigned-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-image-unsigned-5.4.0-1107-ibm

linux-modules-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-modules-5.4.0-1107-ibm

linux-modules-extra-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-modules-extra-5.4.0-1107-ibm

linux-modules-extra-ibm-5.4→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-modules-extra-ibm-5.4

linux-modules-extra-ibm-lts-20.04→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-modules-extra-ibm-lts-20.04

linux-tools-5.4.0-1107-ibm→ fixed in5.4.0-1107.112USN-8616-1

sudo apt-get install --only-upgrade -y linux-tools-5.4.0-1107-ibm

linux-tools-ibm-5.4→ fixed in5.4.0.1107.136USN-8616-1

sudo apt-get install --only-upgrade -y linux-tools-ibm-5.4

Are YOU affected by CVE-2026-31607?

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

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