[USN-7159-4] Linux kernel (IoT) vulnerabilities

[Rodrigo Figueiredo Zaiden]

==========================================================================
Ubuntu Security Notice USN-7159-4
December 20, 2024

linux-iot vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-iot: Linux kernel for IoT platforms

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:
   - ARM32 architecture;
   - ARM64 architecture;
   - S390 architecture;
   - x86 architecture;
   - Power management core;
   - GPU drivers;
   - InfiniBand drivers;
   - Network drivers;
   - S/390 drivers;
   - TTY drivers;
   - BTRFS file system;
   - EROFS file system;
   - F2FS file system;
   - File systems infrastructure;
   - BPF subsystem;
   - Socket messages infrastructure;
   - Bluetooth subsystem;
   - Ethernet bridge;
   - Networking core;
   - IPv4 networking;
   - SELinux security module;
(CVE-2022-48938, CVE-2024-42156, CVE-2024-36953, CVE-2024-38538,
CVE-2021-47501, CVE-2024-42068, CVE-2024-26947, CVE-2024-46724,
CVE-2024-36968, CVE-2023-52497, CVE-2024-35951, CVE-2023-52488,
CVE-2024-44940, CVE-2022-48733, CVE-2023-52498, CVE-2022-48943,
CVE-2024-35904, CVE-2024-42077, CVE-2024-36938, CVE-2023-52639,
CVE-2024-42240, CVE-2024-44942, CVE-2021-47076)

Update instructions:

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1045-iot      5.4.0-1045.46

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-7159-4
   https://ubuntu.com/security/notices/USN-7159-3
   https://ubuntu.com/security/notices/USN-7159-2
   https://ubuntu.com/security/notices/USN-7159-1
   CVE-2021-47076, CVE-2021-47501, CVE-2022-48733, CVE-2022-48938,
   CVE-2022-48943, CVE-2023-52488, CVE-2023-52497, CVE-2023-52498,
   CVE-2023-52639, CVE-2024-26947, CVE-2024-35904, CVE-2024-35951,
   CVE-2024-36938, CVE-2024-36953, CVE-2024-36968, CVE-2024-38538,
   CVE-2024-42068, CVE-2024-42077, CVE-2024-42156, CVE-2024-42240,
   CVE-2024-44940, CVE-2024-44942, CVE-2024-46724

Package Information:
   https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1045.46

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