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Ubuntu 20.04 Low Latency Kernel Low Security Issues USN-8291-2

ubuntu
Calendar Grey May 22, 2026
Dist Ubuntu Esm H88
Security update for Ubuntu 20.04 LTS addressing multiple Linux kernel flaws, requiring system reboot and module recompilation.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- 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:

- SMB network file system;

- Netfilter;

- io_uring subsystem;

(CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351)

Topics%20covered

Topics Covered

security advisory Ubuntu system issue low linux-lowlatency

Update Instructions

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

Ubuntu 20.04 LTS
   linux-image-5.15.0-178-lowlatency  5.15.0-178.188~20.04.1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-178-lowlatency-64k  5.15.0-178.188~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-5.15     5.15.0.178.188~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-5.15  5.15.0.178.188~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.178.188~20.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-hwe-20.04  5.15.0.178.188~20.04.1
                                   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-8291-2

https://ubuntu.com/security/notices/USN-8291-1

CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351

Severity
low
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8291-2

Topics%20covered

Topics Covered

security advisory Ubuntu system issue low linux-lowlatency

Package Information

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