Critical Kernel Security Update for AlmaLinux: Important Fixes for Multiple Packages
Summary
ALSA-2026:71329: Important: kernel security update. Affects bpftool versions < 4.18.0-553.168.1.el8_10. Fixed in 4.18.0-553.168.1.el8_10. 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, being a community-driven enterprise-grade Linux distribution, relies on a stable and secure kernel to ensure optimal performance and security. The recent vulnerabilities identified in the kernel packages pose significant risks, including memory corruption and denial of service, necessitating immediate attention and remediation.
Vulnerability Detail
The vulnerabilities identified in the kernel packages include several critical issues: 1) A memory corruption vulnerability in the PPPoE protocol (CVE-2026-68121) that could allow an attacker to exploit stale pointers, leading to potential system crashes or unauthorized access. 2) A denial of service vulnerability in the Linux kernel IPVS (CVE-2026-80714) caused by stale memory references, which could disrupt network services. 3) An issue in the amdgpu driver (CVE-2026-31566) that could lead to improper handling of fences, potentially affecting graphics performance. 4) A problem in the netfilter subsystem (CVE-2026-52912) that could allow for improper handling of queued packets. 5) A vulnerability in the nvme-tcp subsystem (CVE-2026-89480) that could allow for the rejection of reads that transfer insufficient bytes, impacting data integrity.
How To Fix
Minimum fixed version
4.18.0-553.168.1.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
If immediate patching is not possible, consider disabling the affected kernel features or using alternative network configurations to mitigate the risks associated with these vulnerabilities. However, this is not a permanent solution and should only be used temporarily until the system can be updated.
Conclusion
The recent kernel security update for AlmaLinux addresses critical vulnerabilities that could compromise system integrity and performance. It is imperative for users to update their systems to the patched versions to mitigate risks. Utilizing tools like Vulert can aid in monitoring vulnerabilities effectively.
See every vulnerability recorded for bpftool →
FAQ
The vulnerabilities can lead to memory corruption, denial of service, and potential unauthorized access, significantly affecting system stability and security.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without requiring any signup.
Consider applying temporary workarounds such as disabling affected features or using alternative configurations until you can perform the update.
While specific exploits may not be publicly available, the nature of the vulnerabilities suggests that they could be leveraged by attackers to compromise system integrity.
Regularly check for updates, ideally on a weekly basis, to ensure that your system is protected against known vulnerabilities.
Related vulnerabilities
Recent vulnerabilities recorded for bpftool.
