Ubuntu alert USN-7682-4 (linux-lowlatency, linux-lowlatency-hwe-6.8)

From:
             
 
Giampaolo Fresi Roglia <giampaolo.fresi.roglia@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7682-4] Linux kernel (Low Latency) vulnerabilities
Date:
             
 
Fri, 01 Aug 2025 11:46:01 +0200
Message-ID:
             
 
<87pldfcr3a.fsf@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7682-4
August 01, 2025

linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-lowlatency: Linux low latency kernel
- linux-lowlatency-hwe-6.8: Linux low latency kernel

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:
  - Network traffic control;
(CVE-2025-38083, CVE-2025-37797)

Update instructions:

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

Ubuntu 24.04 LTS
  linux-image-6.8.0-65-lowlatency  6.8.0-65.68.1
  linux-image-6.8.0-65-lowlatency-64k  6.8.0-65.68.1
  linux-image-lowlatency          6.8.0-65.68.1
  linux-image-lowlatency-6.8      6.8.0-65.68.1
  linux-image-lowlatency-64k      6.8.0-65.68.1
  linux-image-lowlatency-64k-6.8  6.8.0-65.68.1

Ubuntu 22.04 LTS
  linux-image-6.8.0-65-lowlatency  6.8.0-65.68.1~22.04.1
  linux-image-6.8.0-65-lowlatency-64k  6.8.0-65.68.1~22.04.1
  linux-image-lowlatency-6.8      6.8.0-65.68.1~22.04.1
  linux-image-lowlatency-64k-6.8  6.8.0-65.68.1~22.04.1
  linux-image-lowlatency-64k-hwe-22.04  6.8.0-65.68.1~22.04.1
  linux-image-lowlatency-hwe-22.04  6.8.0-65.68.1~22.04.1

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-7682-4
  https://ubuntu.com/security/notices/USN-7682-3
  https://ubuntu.com/security/notices/USN-7682-2
  https://ubuntu.com/security/notices/USN-7682-1
  CVE-2025-37797, CVE-2025-38083

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



Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----
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=S5br
-----END PGP SIGNATURE-----