Ubuntu Linux has recently released security updates addressing vulnerabilities in both Apport and the Linux kernel specifically for IoT devices.

Apport Regression Update (USN-7545-4)

On August 4, 2025, Ubuntu issued a security notice (USN-7545-4) detailing a regression in Apport, which is responsible for automatically generating crash reports. The regression, introduced in a previous update (USN-7545-1), impacted how Apport handled logging when a crashing process was terminated during analysis. This flaw could potentially allow attackers to access sensitive information. The affected versions include Ubuntu 22.04 LTS, 20.04 LTS, 18.04 LTS, and 16.04 LTS. To resolve this issue, users are advised to upgrade their Apport packages to the specified versions for their respective Ubuntu releases.

Linux Kernel IoT Vulnerabilities Update (USN-7671-3)

Simultaneously, a second notice (USN-7671-3) was released addressing multiple security vulnerabilities found within the Linux kernel for IoT platforms. These vulnerabilities could be exploited by attackers to compromise system integrity, affecting various subsystems such as ACPI drivers, GPU drivers, and network management. This update is specifically relevant for Ubuntu 20.04 LTS users, who must update to a new version of the Linux kernel (linux-image-5.4.0-1052-iot) and reboot their systems to apply the changes. Notably, the update includes an ABI change necessitating recompilation of any third-party kernel modules.

Recommendations for Users

Users are encouraged to perform standard system updates to address these vulnerabilities and ensure their systems remain secure. Regular updates are crucial for maintaining system integrity and security, especially in light of newly discovered threats. For those using Ubuntu Pro, additional resources and package versions are available.

Conclusion

These updates highlight the ongoing commitment of Ubuntu to provide timely security patches and maintain the robustness of its operating system. Users should stay informed about such updates and take proactive measures to protect their systems from potential breaches.

For further details, users can refer to the official security notices linked above

Apport and Kernel updates for Ubuntu

Ubuntu Linux has received security updates, including an update addressing a regression in Apport as well as a Linux kernel IoT vulnerability:

[USN-7545-4] Apport regression
[USN-7671-3] Linux kernel (IoT) vulnerabilities

Apport and Kernel updates for Ubuntu @ Linux Compatible