Moderate Kernel Security Update for AlmaLinux: Addressing Multiple Vulnerabilities
Summary
ALSA-2026:1662: Moderate: kernel security update. Affects bpftool versions < 4.18.0-553.100.1.el8_10. Fixed in 4.18.0-553.100.1.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. AlmaLinux, a community-driven enterprise-grade Linux distribution, relies on the kernel to ensure stability, performance, and security. This specific update addresses several vulnerabilities that could potentially compromise system integrity and performance.
Vulnerability Detail
This update addresses multiple vulnerabilities within the Linux kernel, including an off-by-one error in the IB/hfi1 driver (CVE-2024-26766), a use-after-free vulnerability in RDMA/rxe leading to arbitrary code execution (CVE-2025-38024), and memory corruption in Squashfs (CVE-2025-38415). These vulnerabilities can lead to denial of service, privilege escalation, and information disclosure, posing significant risks to system security.
How To Fix
Minimum fixed version
4.18.0-553.100.1.el8_10
This is the first release that contains the fix.
sudo dnf update bpftoolTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can limit access to the affected components or disable specific features that utilize the vulnerable drivers until the update is applied. However, this is not a permanent solution and updating is strongly recommended.
Conclusion
The kernel security update for AlmaLinux addresses critical vulnerabilities that could impact system integrity and security. It is essential for users to apply the recommended updates promptly to safeguard their systems. Utilizing tools like Vulert can further enhance your ability to monitor and manage vulnerabilities effectively.
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FAQ
The vulnerabilities can lead to denial of service, privilege escalation, and potential arbitrary code execution, which can compromise system security.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without any signup.
If immediate updates are not possible, consider implementing temporary workarounds such as limiting access to vulnerable components.
While specific exploits may not be publicly available, the nature of the vulnerabilities suggests they could be targeted by attackers, making it crucial to apply updates.
Regularly check for updates, ideally on a weekly basis, to ensure your system remains secure against newly discovered vulnerabilities.
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