[USN-7408-4] Linux kernel (HWE) vulnerabilities

-----BEGIN PGP SIGNATURE-----

wsB5BAABCAAjFiEEYrygdx1GDec9TV8EZ0GeRcM5nt0FAmf0EpoFAwAAAAAACgkQZ0GeRcM5nt3K
/Qf8DNs1xBYOuQqoVqX7jnFrTtxoSf5HcmGLGJAYayxKe6qe4OQyHC6rmWR+IQePlykWyDNPqm5H
2XnaBtXSrMXSg+AgOtQ8vX39B+2CYRQMfYbQYRPBibTkqb5NdHt7bluLEbu4h4qXlipNJOYK8jQo
vPa0bOxSd8gflZs3KHAlpY7SRtx/g3eTgM/cbw2NCt4GHweovvt4K/DiIs4cJKa7VdunzDtRAlcS
ZGbdxCIeEuR4LgxkOpCz18wZWyQlTGNsgtnNjSLXtY4tU30mfmsjzY5uob3XMLXW0TWMkKCcNRHZ
rsL/WOyrQizivCJYto0AfJtSBKix3yNnad7Y05n56g==
=BecS
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-7408-4
April 07, 2025

linux-hwe-5.4 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-hwe-5.4: Linux hardware enablement (HWE) 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:
- SMB network file system;
- Network namespace;
- Networking core;
(CVE-2024-56658, CVE-2024-35864, CVE-2024-26928)

Update instructions:

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

Ubuntu 18.04 LTS
linux-image-5.4.0-212-generic 5.4.0-212.232~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-212-lowlatency 5.4.0-212.232~18.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-18.04 5.4.0.212.232~18.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-18.04 5.4.0.212.232~18.04.1
Available with Ubuntu Pro
linux-image-oem 5.4.0.212.232~18.04.1
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.212.232~18.04.1
Available with Ubuntu Pro
linux-image-snapdragon-hwe-18.04 5.4.0.212.232~18.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-18.04 5.4.0.212.232~18.04.1
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-7408-4
https://ubuntu.com/security/notices/USN-7408-3
https://ubuntu.com/security/notices/USN-7408-2
https://ubuntu.com/security/notices/USN-7408-1
CVE-2024-26928, CVE-2024-35864, CVE-2024-56658