Home / mailings

PDF

[USN-8920-1] Linux kernel vulnerabilities

Posted on 13 October 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8920-1
October 13, 2026

linux-aws-5.4, linux-aws-fips, linux-azure-fips, linux-ibm, linux-ibm-5.4
vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS
- linux-ibm: Linux kernel for IBM cloud systems
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-ibm-5.4: Linux kernel for IBM 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:
- Ethernet bonding driver;
- Network drivers;
- F2FS file system;
- Network file system (NFS) server daemon;
- Tracing infrastructure;
- io_uring subsystem;
- Networking core;
- IPv6 networking;
- IUCV driver;
- Netfilter;
- RxRPC session sockets;
(CVE-2022-49149, CVE-2022-49170, CVE-2022-49182, CVE-2022-49201,
CVE-2024-53187, CVE-2024-53210, CVE-2024-56763, CVE-2025-38724,
CVE-2026-43456, CVE-2026-52910, CVE-2026-53131, CVE-2026-53221)

Update instructions:

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

Ubuntu 20.04 LTS
linux-image-5.4.0-1111-ibm 5.4.0-1111.116
Available with Ubuntu Pro
linux-image-5.4.0-1165-aws-fips 5.4.0-1165.176+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1170-azure-fips 5.4.0-1170.176+fips1
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1165.112
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1165.112
Available with Ubuntu Pro
linux-image-azure-fips 5.4.0.1170.106
Available with Ubuntu Pro
linux-image-azure-fips-5.4 5.4.0.1170.106
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1111.140
Available with Ubuntu Pro
linux-image-ibm-lts-20.04 5.4.0.1111.140
Available with Ubuntu Pro

Ubuntu 18.04 LTS
linux-image-5.4.0-1111-ibm 5.4.0-1111.116~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1165-aws 5.4.0-1165.176~18.04.1
Available with Ubuntu Pro
linux-image-aws 5.4.0.1165.176~18.04.1
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1165.176~18.04.1
Available with Ubuntu Pro
linux-image-ibm 5.4.0.1111.116~18.04.1
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1111.116~18.04.1
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-8920-1
CVE-2022-49149, CVE-2022-49170, CVE-2022-49182, CVE-2022-49201,
CVE-2024-53187, CVE-2024-53210, CVE-2024-56763, CVE-2025-38724,
CVE-2026-43456, CVE-2026-52910, CVE-2026-53131, CVE-2026-53221

--===============2716374361385024107==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP