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Ubuntu 25.10: Linux Kernel Critical Flaws Security Patch USN-7906-3

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Calendar Grey December 11, 2025
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Multiple security issues fixed in the Linux kernel for Ubuntu 25.10, requiring updates for Raspberry Pi systems.
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:

- x86 architecture;

- Cryptographic API;

- Android drivers;

- TTY drivers;

- F2FS file system;

- 9P file system network protocol;

(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,

CVE-2025-40108, CVE-2025-40109)

Topics%20covered

Topics Covered

security advisory security issue remote access Ubuntu system patch Linux kernel

Update Instructions

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

Ubuntu 25.10
   linux-image-6.17.0-1005-raspi   6.17.0-1005.5
   linux-image-raspi               6.17.0-1005.5
   linux-image-raspi-6.17          6.17.0-1005.5

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-7906-3

https://ubuntu.com/security/notices/USN-7906-2

https://ubuntu.com/security/notices/USN-7906-1

CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,

CVE-2025-40108, CVE-2025-40109

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7906-3

Topics%20covered

Topics Covered

security advisory security issue remote access Ubuntu system patch Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi/6.17.0-1005.5

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