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Ubuntu 25.10: Linux Kernel Critical Update CVE-2025-40018 for Raspberry Pi

ubuntu
Calendar Grey December 15, 2025
Dist Ubuntu Esm H88
Critical update for Ubuntu 25.10 addressing multiple security issues in the linux-raspi kernel. Reboot required after patching.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-raspi: Linux kernel for Raspberry Pi systems

Details:

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the system.

This update corrects flaws in the following subsystems:

- Tracing infrastructure;

- Netfilter;

(CVE-2025-40018, CVE-2025-40232)

Topics%20covered

Topics Covered

security advisory kernel update critical Ubuntu system compromise linux-raspi

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
   linux-image-6.17.0-1006-raspi   6.17.0-1006.6
   linux-image-raspi               6.17.0-1006.6
   linux-image-raspi-6.17          6.17.0-1006.6

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-7920-2

https://ubuntu.com/security/notices/USN-7920-1

CVE-2025-40018, CVE-2025-40232

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7920-2

Topics%20covered

Topics Covered

security advisory kernel update critical Ubuntu system compromise linux-raspi

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi/6.17.0-1006.6

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