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Ubuntu 20.04 LTS USN-6867-1 Critical: Linux Kernel Denial of Service

ubuntu
Calendar Grey July 3, 2024
Dist Ubuntu Esm H88
Numerous vulnerabilities in the Ubuntu Linux kernel necessitate prompt patches to prevent possible attacks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-bluefield: Linux kernel for NVIDIA BlueField platforms

- linux-iot: Linux kernel for IoT platforms

Details:

It was discovered that the HugeTLB file system component of the Linux

Kernel contained a NULL pointer dereference vulnerability. A privileged

attacker could possibly use this to to cause a denial of service.

(CVE-2024-0841)

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;

- PowerPC architecture;

- x86 architecture;

- DMA engine subsystem;

- EFI core;

- GPU drivers;

- InfiniBand drivers;

- Multiple devices driver;

- Network drivers;

- Power supply drivers;

- TCM subsystem;

- Userspace I/O drivers;

- USB subsystem;

- Framebuffer layer;

- AFS file system;

- File...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service update Ubuntu kernel linux-bluefield linux-iot

Update Instructions

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1038-iot      5.4.0-1038.39
   linux-image-5.4.0-1086-bluefield  5.4.0-1086.93
   linux-image-bluefield           5.4.0.1086.82

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

CVE-2021-47063, CVE-2021-47070, CVE-2023-52504, CVE-2024-0841,

CVE-2024-26688, CVE-2024-26712, CVE-2024-26733, CVE-2024-26735,

CVE-2024-26736, CVE-2024-26748, CVE-2024-26749, CVE-2024-26751,

CVE-2024-26752, CVE-2024-26754, CVE-2024-26763, CVE-2024-26764,

CVE-2024-26766, CVE-2024-26772, CVE-2024-26773, CVE-2024-26777,

CVE-2024-26778, CVE-2024-26779, CVE-2024-26788, CVE-2024-26790,

CVE-2024-26791, CVE-2024-26793, CVE-2024-26801, CVE-2024-26804,

CVE-2024-26805, CVE-2024-26835, CVE-2024-26839, CVE-2024-26840,

CVE-2024-26845, CVE-2024-26848, CVE-2024-27405, CVE-2024-27410,

CVE-2024-27412, CVE-2024-27413, CVE-2024-27414, CVE-2024-27416,

CVE-2024-27417

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6867-1

Topics%20covered

Topics Covered

security advisory denial of service update Ubuntu kernel linux-bluefield linux-iot

Package Information

https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1086.93
https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1038.39

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