Ubuntu alert USN-7928-5 (linux-kvm)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7928-5] Linux kernel (KVM) vulnerabilities
Date:
             
 
Fri, 09 Jan 2026 16:54:52 -0300
Message-ID:
             
 
<9d8ddfa8-a5e6-40ec-bd76-6f4dcecc4f3f@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7928-5
January 09, 2026

linux-kvm 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-kvm: Linux kernel for cloud environments

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:
   - Cryptographic API;
   - Media drivers;
   - Network drivers;
   - AFS file system;
   - F2FS file system;
   - Tracing infrastructure;
   - Netfilter;
(CVE-2022-49390, CVE-2024-47691, CVE-2024-50067, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-39964, CVE-2025-39993,
CVE-2025-40018)

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-kvm     5.15.0-1090.95
   linux-image-kvm                 5.15.0.1090.86
   linux-image-kvm-5.15            5.15.0.1090.86

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-7928-5
   https://ubuntu.com/security/notices/USN-7928-4
   https://ubuntu.com/security/notices/USN-7928-3
   https://ubuntu.com/security/notices/USN-7928-2
   https://ubuntu.com/security/notices/USN-7928-1
   CVE-2022-49390, CVE-2024-47691, CVE-2024-50067, CVE-2024-53090,
   CVE-2024-53218, CVE-2025-21855, CVE-2025-39964, CVE-2025-39993,
   CVE-2025-40018

Package Information:
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-109...



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

wsB5BAABCAAjFiEEYrygdx1GDec9TV8EZ0GeRcM5nt0FAmlhXQwFAwAAAAAACgkQZ0GeRcM5nt29
zgf+Kra2QeeECaCxLwDLP0HVJ+HM+b0KAoDHbP1tcJzJ8GQpCX9IfMQgOcofXzu7HlPfqNTFXSrG
gH0Eh0Pd/9CoMkEHF4dy8Mp6ozhgLUdpo21ExFbAw3j+SY3ZwlSz5kIPbF1nLnANEZZgiYm/B0zj
PeOpk0h8dlwWAy0XB2aAJFGrvdopt+WbTbhmWVAZZIw4tdWmL8/l93dgsxHHQ5+JBeaFGA0GN4bv
26ZEMNH2gMQZcalmGpdfFvb3OS1ofojZ1g1umbf60UnnDL7UFeRtHFlrbUNm2P0g63PKPEZxjqOA
jQbDi2tvuUwLMxRe9Cr0Vw4VkILGP7WcSZ3qIdCMuQ==
=sv/Q
-----END PGP SIGNATURE-----