Ubuntu alert USN-7889-6 (linux-hwe-6.8, linux-oracle-6.8)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7889-6] Linux kernel vulnerabilities
Date:
             
 
Thu, 11 Dec 2025 17:07:05 -0300
Message-ID:
             
 
<1405f5ac-4929-4594-95df-bf36dead1dde@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7889-6
December 11, 2025

linux-hwe-6.8, linux-oracle-6.8 vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-hwe-6.8: Linux hardware enablement (HWE) kernel
- linux-oracle-6.8: Linux kernel for Oracle Cloud 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:
   - Media drivers;
   - Network drivers;
   - Netfilter;
   - TLS protocol;
(CVE-2025-21729, CVE-2025-38227, CVE-2025-38616, CVE-2025-38678)

Update instructions:

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

Ubuntu 22.04 LTS
   linux-image-6.8.0-1040-oracle   6.8.0-1040.41~22.04.1
   linux-image-6.8.0-1040-oracle-64k  6.8.0-1040.41~22.04.1
   linux-image-6.8.0-88-generic    6.8.0-88.89~22.04.2
   linux-image-6.8.0-88-generic-64k  6.8.0-88.89~22.04.2
   linux-image-generic-6.8         6.8.0-88.89~22.04.2
   linux-image-generic-64k-6.8     6.8.0-88.89~22.04.2
   linux-image-generic-64k-hwe-22.04  6.8.0-88.89~22.04.2
   linux-image-generic-hwe-22.04   6.8.0-88.89~22.04.2
   linux-image-oem-22.04           6.8.0-88.89~22.04.2
   linux-image-oem-22.04a          6.8.0-88.89~22.04.2
   linux-image-oem-22.04b          6.8.0-88.89~22.04.2
   linux-image-oem-22.04c          6.8.0-88.89~22.04.2
   linux-image-oem-22.04d          6.8.0-88.89~22.04.2
   linux-image-oracle              6.8.0-1040.41~22.04.1
   linux-image-oracle-6.8          6.8.0-1040.41~22.04.1
   linux-image-oracle-64k          6.8.0-1040.41~22.04.1
   linux-image-oracle-64k-6.8      6.8.0-1040.41~22.04.1
   linux-image-virtual-6.8         6.8.0-88.89~22.04.2
   linux-image-virtual-hwe-22.04   6.8.0-88.89~22.04.2

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-7889-6
   https://ubuntu.com/security/notices/USN-7889-5
   https://ubuntu.com/security/notices/USN-7889-4
   https://ubuntu.com/security/notices/USN-7889-3
   https://ubuntu.com/security/notices/USN-7889-2
   https://ubuntu.com/security/notices/USN-7889-1
   CVE-2025-21729, CVE-2025-38227, CVE-2025-38616, CVE-2025-38678

Package Information:
   https://launchpad.net/ubuntu/+source/linux-hwe-6.8/6.8.0-...
   https://launchpad.net/ubuntu/+source/linux-oracle-6.8/6.8...



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