[USN-7920-2] Linux kernel (Raspberry Pi) vulnerabilities

[Rodrigo Figueiredo Zaiden]

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Ubuntu Security Notice USN-7920-2
December 15, 2025

linux-raspi vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10

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)

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

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

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