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Ubuntu 22.04 LTS USN-6922-2 Moderate: Linux Kernel Denial Of Service

ubuntu
Calendar Grey August 1, 2024
Dist Ubuntu Esm H88
Numerous patches implemented for the Linux kernel in Ubuntu to address vulnerabilities that could result in service disruption.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lowlatency-hwe-6.5: Linux low latency kernel

Details:

It was discovered that a race condition existed in the Bluetooth subsystem

in the Linux kernel when modifying certain settings values through debugfs.

A privileged local attacker could use this to cause a denial of service.

(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)

Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device

volume management subsystem did not properly validate logical eraseblock

sizes in certain situations. An attacker could possibly use this to cause a

denial of service (system crash). (CVE-2024-25739)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system update Linux kernel low latency

Update Instructions

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

Ubuntu 22.04 LTS
  linux-image-6.5.0-45-lowlatency  6.5.0-45.45.1~22.04.1
  linux-image-6.5.0-45-lowlatency-64k  6.5.0-45.45.1~22.04.1
  linux-image-lowlatency-64k-hwe-22.04  6.5.0.45.45.1~22.04.1
  linux-image-lowlatency-hwe-22.04  6.5.0.45.45.1~22.04.1

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-6922-2

https://ubuntu.com/security/notices/USN-6922-1

CVE-2024-24857, CVE-2024-24858, CVE-2024-24859, CVE-2024-25739

==========================================================================

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system update Linux kernel low latency

Package Information

https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-6.5/6.5.0-45.45.1~22.04.1

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