Kernel Vulnerability in AlmaLinux: Moderate Security Flaw and Bug Fix Update
Summary
ALSA-2026:74438: Moderate: kernel security, bug fix, and enhancement update. Affects kernel versions < 5.14.0-687.54.1.el9_8. Fixed in 5.14.0-687.54.1.el9_8. How to fix ↓
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Background
The kernel package is a fundamental component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential services such as process management, memory management, and device control. This vulnerability affects the kernel in AlmaLinux 9, which is widely used in server environments and cloud infrastructures, making it critical to address any security issues promptly.
Vulnerability Detail
This vulnerability arises from multiple security flaws within the kernel, including improper validation of the wqe_size in RDMA/uverbs, a page overflow in KVM's SVM during the ENCRYPT path, and a race condition in the futex system. These issues could lead to unauthorized access, system crashes, or denial of service, potentially compromising the integrity and availability of the system.
How To Fix
Minimum fixed version
5.14.0-687.54.1.el9_8
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 workaround, users can limit the use of features affected by the vulnerabilities until the kernel is updated. However, it is highly recommended to apply the patch as soon as possible for full protection.
Conclusion
In summary, the kernel vulnerability in AlmaLinux poses a moderate security risk that can lead to significant system issues if not addressed. Users are urged to update to the latest patched version to safeguard their systems. Regular updates and monitoring for vulnerabilities are essential practices for maintaining system security.
See every vulnerability recorded for kernel →
FAQ
The vulnerabilities include improper validation of input sizes, potential page overflows, and race conditions that could lead to system instability or unauthorized access.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Failure to address this vulnerability could lead to unauthorized access, system crashes, or denial of service, compromising the security and stability of your system.
Yes, depending on the exploitation of the vulnerabilities, there is a risk of data loss or corruption, especially if the system becomes unstable.
It is advisable to regularly check for updates and apply them as soon as they are available to ensure your system is protected against known vulnerabilities.
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