[USN-7332-3] Linux kernel vulnerabilities

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Ubuntu Security Notice USN-7332-3
March 13, 2025

linux-lts-xenial 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-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

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:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure;
- BPF subsystem;
- Netfilter;
- Network sockets;
- Memory management;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- Netlink;
- TIPC protocol;
- Wireless networking;
- ALSA framework;
(CVE-2024-53156, CVE-2024-40943, CVE-2024-49902, CVE-2023-52488,
CVE-2024-50233, CVE-2024-40911, CVE-2022-48994, CVE-2024-40981,
CVE-2024-53104, CVE-2024-43900, CVE-2024-44938, CVE-2024-36952,
CVE-2023-52799, CVE-2021-47103, CVE-2024-43863, CVE-2024-50171,
CVE-2024-43892, CVE-2023-52522, CVE-2021-47606, CVE-2024-50148,
CVE-2024-50117, CVE-2024-43893, CVE-2024-38567, CVE-2024-36886,
CVE-2024-41064, CVE-2023-52818, CVE-2024-26685, CVE-2024-41063,
CVE-2024-43854, CVE-2024-44931, CVE-2024-42068, CVE-2024-40910,
CVE-2023-52880, CVE-2024-42070, CVE-2024-36964, CVE-2024-35896)

Update instructions:

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

Ubuntu 14.04 LTS
linux-image-4.4.0-266-generic 4.4.0-266.300~14.04.1
Available with Ubuntu Pro
linux-image-4.4.0-266-lowlatency 4.4.0-266.300~14.04.1
Available with Ubuntu Pro
linux-image-generic-lts-xenial 4.4.0.266.300~14.04.1
Available with Ubuntu Pro
linux-image-lowlatency-lts-xenial 4.4.0.266.300~14.04.1
Available with Ubuntu Pro
linux-image-virtual-lts-xenial 4.4.0.266.300~14.04.1
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-7332-3
https://ubuntu.com/security/notices/USN-7332-2
https://ubuntu.com/security/notices/USN-7332-1
CVE-2021-47103, CVE-2021-47606, CVE-2022-48994, CVE-2023-52488,
CVE-2023-52522, CVE-2023-52799, CVE-2023-52818, CVE-2023-52880,
CVE-2024-26685, CVE-2024-35896, CVE-2024-36886, CVE-2024-36952,
CVE-2024-36964, CVE-2024-38567, CVE-2024-40910, CVE-2024-40911,
CVE-2024-40943, CVE-2024-40981, CVE-2024-41063, CVE-2024-41064,
CVE-2024-42068, CVE-2024-42070, CVE-2024-43854, CVE-2024-43863,
CVE-2024-43892, CVE-2024-43893, CVE-2024-43900, CVE-2024-44931,
CVE-2024-44938, CVE-2024-49902, CVE-2024-50117, CVE-2024-50148,
CVE-2024-50171, CVE-2024-50233, CVE-2024-53104, CVE-2024-53156