[USN-7607-2] Linux kernel (FIPS) vulnerabilities

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

wsB5BAABCAAjFiEEYrygdx1GDec9TV8EZ0GeRcM5nt0FAmhkeZUFAwAAAAAACgkQZ0GeRcM5nt3a
Rgf+MnTa/ahZjbrllHg3m/OzPVi0T+gMV34CYikBs6NiyqPhVOS4wyhyUfjU3BETPHThE53JKgfB
WEXk5k4IpC6/7iORdtEK3dstKBebe3kr/vCvbZTbTd9IKFtr+QX8gXFgCru4XsKZWSqqOra73WOp
1+UcJTx32H0Lji9ioysCAGN/OyWYPomRMVwwb1x876Mqk8Tb4meUcLXngGU0wghnEi641pswh7g9
pnOF/2I1e3TvgIyo1ckBHiiIdyDYI+9dEC5JYR/p8CKkLWAHIrv7y4HfSgpSHimx+hUkexAFu7ZU
urwY3kmwx6sLyMGGbkDmPnlJcefcn2DSDjB40VWS9Q==
=UgPf
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-7607-2
July 01, 2025

linux-fips vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-fips: Linux kernel with FIPS

Details:

It was discovered that a use-after-free vulnerability existed in the
Bluetooth stack in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3640)

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:
- SCSI subsystem;
- Network file system (NFS) client;
- NILFS2 file system;
- File systems infrastructure;
- Memory management;
- Bluetooth subsystem;
- Network traffic control;
- USB sound devices;
(CVE-2024-50116, CVE-2021-47576, CVE-2024-53197, CVE-2024-46787,
CVE-2025-37798, CVE-2024-49958, CVE-2021-47260, CVE-2025-37932,
CVE-2022-49909)

Update instructions:

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

Ubuntu 16.04 LTS
linux-image-4.4.0-1115-fips 4.4.0-1115.122
Available with Ubuntu Pro
linux-image-fips 4.4.0.1115.116
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-7607-2
https://ubuntu.com/security/notices/USN-7607-1
CVE-2021-47260, CVE-2021-47576, CVE-2022-3640, CVE-2022-49909,
CVE-2024-46787, CVE-2024-49958, CVE-2024-50116, CVE-2024-53197,
CVE-2025-37798, CVE-2025-37932

Package Information:
https://launchpad.net/ubuntu/+source/linux-fips/4.4.0-1115.122