A security issue affects Ubuntu 14.04 LTS due to several vulnerabilities in the Linux kernel. The issues include a use-after-free vulnerability caused by a race condition in the Unix domain socket, as well as flaws in the HID and media drivers subsystems (CVE-2021-0920, CVE-2024-50302, CVE-2024-53104).

[USN-7720-1] Linux kernel vulnerabilities

[USN-7720-1] Linux kernel vulnerabilities

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Ubuntu Security Notice USN-7720-1
August 27, 2025

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

It was discovered a race condition existed in the Unix domain socket
implementation in the Linux kernel, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-0920)

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:
- HID subsystem;
- Media drivers;
(CVE-2024-50302, CVE-2024-53104)

Update instructions:

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

Ubuntu 14.04 LTS
linux-image-3.13.0-207-generic 3.13.0-207.258
Available with Ubuntu Pro
linux-image-3.13.0-207-lowlatency 3.13.0-207.258
Available with Ubuntu Pro
linux-image-generic 3.13.0.207.217
Available with Ubuntu Pro
linux-image-generic-lts-trusty 3.13.0.207.217
Available with Ubuntu Pro
linux-image-lowlatency 3.13.0.207.217
Available with Ubuntu Pro
linux-image-server 3.13.0.207.217
Available with Ubuntu Pro
linux-image-virtual 3.13.0.207.217
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-7720-1
CVE-2021-0920, CVE-2024-50302, CVE-2024-53104