========================================================================== Ubuntu Security Notice USN-7607-1 July 01, 2025
linux, linux-aws, linux-lts-xenial vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
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-4.4.0-1183-aws 4.4.0-1183.198
Available with Ubuntu Pro
linux-image-4.4.0-270-generic 4.4.0-270.304
Available with Ubuntu Pro
linux-image-4.4.0-270-lowlatency 4.4.0-270.304
Available with Ubuntu Pro
linux-image-aws 4.4.0.1183.187
Available with Ubuntu Pro
linux-image-generic 4.4.0.270.276
Available with Ubuntu Pro
linux-image-generic-lts-xenial 4.4.0.270.276
Available with Ubuntu Pro
linux-image-lowlatency 4.4.0.270.276
Available with Ubuntu Pro
linux-image-lowlatency-lts-xenial 4.4.0.270.276
Available with Ubuntu Pro
linux-image-virtual 4.4.0.270.276
Available with Ubuntu Pro
linux-image-virtual-lts-xenial 4.4.0.270.276
Available with Ubuntu Pro
Ubuntu 14.04 LTS
linux-image-4.4.0-1145-aws 4.4.0-1145.151
Available with Ubuntu Pro
linux-image-4.4.0-270-generic 4.4.0-270.304~14.04.1
Available with Ubuntu Pro
linux-image-4.4.0-270-lowlatency 4.4.0-270.304~14.04.1
Available with Ubuntu Pro
linux-image-aws 4.4.0.1145.142
Available with Ubuntu Pro
linux-image-generic-lts-xenial 4.4.0.270.304~14.04.1
Available with Ubuntu Pro
linux-image-lowlatency-lts-xenial 4.4.0.270.304~14.04.1
Available with Ubuntu Pro
linux-image-virtual-lts-xenial 4.4.0.270.304~14.04.1
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-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
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