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Alerts This Week
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Ubuntu 22.04 LTS: USN-7021-3 Critical Threats in Lowlatency Kernel

ubuntu
Calendar Grey September 26, 2024
Dist Ubuntu Esm H88
Ubuntu Security Alert USN-7022-4 addresses significant patches for linux-generic and linux-generic-hwe-5.16 to mitigate vulnerabilities.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lowlatency: Linux low latency kernel

- linux-lowlatency-hwe-5.15: Linux low latency kernel

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:

- GPU drivers;

- BTRFS file system;

- F2FS file system;

- GFS2 file system;

- BPF subsystem;

- Netfilter;

- RxRPC session sockets;

- Integrity Measurement Architecture(IMA) framework;

(CVE-2024-39494, CVE-2024-38570, CVE-2024-27012, CVE-2024-39496,

CVE-2024-42160, CVE-2024-41009, CVE-2024-42228, CVE-2024-26677)

Topics%20covered

Topics Covered

security advisory threat Ubuntu issue kernel linux-lowlatency

Update Instructions

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

Ubuntu 22.04 LTS
  linux-image-5.15.0-122-lowlatency  5.15.0-122.132
  linux-image-5.15.0-122-lowlatency-64k  5.15.0-122.132
  linux-image-lowlatency          5.15.0.122.111
  linux-image-lowlatency-64k      5.15.0.122.111

Ubuntu 20.04 LTS
  linux-image-5.15.0-122-lowlatency  5.15.0-122.132~20.04.1
  linux-image-5.15.0-122-lowlatency-64k  5.15.0-122.132~20.04.1
  linux-image-lowlatency-64k-hwe-20.04  5.15.0.122.132~20.04.1
  linux-image-lowlatency-hwe-20.04  5.15.0.122.132~20.04.1

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-7021-3

https://ubuntu.com/security/notices/USN-7021-2

https://ubuntu.com/security/notices/USN-7021-1

CVE-2024-26677, CVE-2024-27012, CVE-2024-38570, CVE-2024-39494,

CVE-2024-39496, CVE-2024-41009, CVE-2024-42160, CVE-2024-42228

Severity
critical
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory threat Ubuntu issue kernel linux-lowlatency

Package Information

https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-122.132
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-122.132~20.04.1

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