Critical Kernel Vulnerabilities in Rocky Linux 8: Security and Stability Risks

kernel Updated 21 Oct 2026

Summary

21/10/2026

Disclosed on

N/A

Severity

Yes i

Fix available

High

Severity

8.8

CVSS Score

RLSA-2026:85773: Important: kernel security, bug fix, and enhancement update. Affects kernel versions < 0:4.18.0-553.176.1.el8_10. Fixed in 0:4.18.0-553.176.1.el8_10. How to fix ↓

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Background

The kernel is the core component of any Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. In Rocky Linux 8, the kernel package is essential for system stability and performance. However, recent vulnerabilities have been identified that could compromise the security and functionality of systems running this version.

Vulnerability Detail

The vulnerabilities identified in the kernel package include multiple security flaws such as a heap overflow in the USB serial driver, improper handling of SCTP packets, and potential use-after-free conditions. These vulnerabilities can lead to unauthorized access, data corruption, or system crashes, posing significant risks to system integrity and user data. The CVSS score for these vulnerabilities is 8.8, indicating a high severity level.

How To Fix

Minimum fixed version

0:4.18.0-553.176.1.el8_10

This is the first release that contains the fix.

sudo dnf update kernel

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Workaround

As a temporary workaround, users can limit access to the affected services or disable specific functionalities until the kernel is updated. However, this is not a permanent solution and should only be used until the patch is applied.

Conclusion

In summary, the kernel vulnerabilities in Rocky Linux 8 pose significant security and stability risks. It is essential to update the kernel package to the latest patched version to mitigate these risks. Users should also consider using tools like Vulert to monitor for vulnerabilities in their applications.

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