Moderate Kernel Security Update: AlmaLinux 9 Kernel Packages Vulnerability
Summary
ALSA-2025:19930: Moderate: kernel security update. Affects kernel versions < 5.14.0-570.62.1.el9_6. Fixed in 5.14.0-570.62.1.el9_6. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The kernel is the core component of any Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. AlmaLinux 9 utilizes the kernel to ensure system stability, performance, and security. However, vulnerabilities in the kernel can lead to significant security risks, making timely updates essential for maintaining system integrity.
Vulnerability Detail
This vulnerability arises from transient execution flaws in certain AMD processors, which can lead to information leaks and unauthorized access to sensitive data. Specifically, CVE-2024-36350 and CVE-2024-36357 detail information leak vulnerabilities, while CVE-2025-40300 introduces a conditional IBPB mitigation for x86/vmscape. These vulnerabilities can potentially allow attackers to exploit transient execution to access confidential information, posing a serious threat to system security.
How To Fix
Minimum fixed version
5.14.0-570.62.1.el9_6
This is the first release that contains the fix.
sudo dnf update kernelTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit the exposure to these vulnerabilities by disabling certain features in the BIOS related to speculative execution. However, this may impact system performance and should be considered only until a proper update can be applied.
Conclusion
The kernel vulnerability in AlmaLinux 9 poses a moderate risk due to potential information leaks via transient execution in AMD processors. Users are strongly advised to update their kernel packages to the latest patched version to mitigate these risks effectively.
See every vulnerability recorded for kernel →
FAQ
The vulnerability can lead to information leaks, allowing unauthorized access to sensitive data stored in memory.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If an immediate update is not possible, consider implementing workarounds such as disabling speculative execution features in the BIOS.
While there are no specific exploits reported at this time, the nature of the vulnerability makes it a potential target for attackers.
It is recommended to check for kernel updates regularly, ideally as part of a routine system maintenance schedule.
Related vulnerabilities
Recent vulnerabilities recorded for kernel.
