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Ubuntu Security Notices USN-7829-5 and USN-7845-1 have been issued to address vulnerabilities in the Linux kernel and Squid, respectively. The Linux kernel vulnerability affects Ubuntu 22.04 LTS and 20.04 LTS, while the Squid vulnerability affects various Ubuntu versions from 16.04 LTS to 25.10. The Linux kernel updates correct flaws in GPU drivers, network drivers, and Netlink, which an attacker could potentially use to compromise the system.

[USN-7829-5] Linux kernel (Intel IoTG) vulnerabilities
[USN-7845-1] Squid vulnerability




[USN-7829-5] Linux kernel (Intel IoTG) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7829-5
October 28, 2025

linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-intel-iotg: Linux kernel for Intel IoT platforms
- linux-intel-iotg-5.15: Linux kernel for Intel IoT platforms

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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1090-intel-iotg 5.15.0-1090.96
linux-image-intel-iotg 5.15.0.1090.90
linux-image-intel-iotg-5.15 5.15.0.1090.90

Ubuntu 20.04 LTS
linux-image-5.15.0-1090-intel-iotg 5.15.0-1090.96~20.04.1
Available with Ubuntu Pro
linux-image-intel 5.15.0.1090.96~20.04.1
Available with Ubuntu Pro
linux-image-intel-iotg 5.15.0.1090.96~20.04.1
Available with Ubuntu Pro
linux-image-intel-iotg-5.15 5.15.0.1090.96~20.04.1
Available with Ubuntu Pro

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-7829-5
https://ubuntu.com/security/notices/USN-7829-4
https://ubuntu.com/security/notices/USN-7829-3
https://ubuntu.com/security/notices/USN-7829-2
https://ubuntu.com/security/notices/USN-7829-1
CVE-2023-52593, CVE-2024-26700, CVE-2024-26896, CVE-2025-38727

Package Information:
https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1090.96



[USN-7845-1] Squid vulnerability


==========================================================================
Ubuntu Security Notice USN-7845-1
October 28, 2025

squid, squid3 vulnerability
==========================================================================

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

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Squid would allow unintended access to sensitive information over the
network.

Software Description:
- squid: Web proxy cache server
- squid3: Web proxy cache server

Details:

Leonardo Giovannini discovered that Squid failed to redact HTTP
Authentication credentials in a default configuration. An attacker could
possibly use this issue to obtain sensitive information.

Update instructions:

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

Ubuntu 25.10
squid 6.13-1ubuntu4.1

Ubuntu 25.04
squid 6.13-1ubuntu1.2

Ubuntu 24.04 LTS
squid 6.13-0ubuntu0.24.04.3

Ubuntu 22.04 LTS
squid 5.9-0ubuntu0.22.04.4

Ubuntu 20.04 LTS
squid 4.10-1ubuntu1.13+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
squid 3.5.27-1ubuntu1.14+esm4
Available with Ubuntu Pro
squid3 3.5.27-1ubuntu1.14+esm4
Available with Ubuntu Pro

Ubuntu 16.04 LTS
squid 3.5.12-1ubuntu7.16+esm5
Available with Ubuntu Pro
squid3 3.5.12-1ubuntu7.16+esm5
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7845-1
CVE-2025-62168

Package Information:
https://launchpad.net/ubuntu/+source/squid/6.13-1ubuntu4.1
https://launchpad.net/ubuntu/+source/squid/6.13-1ubuntu1.2
https://launchpad.net/ubuntu/+source/squid/6.13-0ubuntu0.24.04.3
https://launchpad.net/ubuntu/+source/squid/5.9-0ubuntu0.22.04.4