Privilege Escalation Vulnerability in Intel Microcode Package
Summary
ALPINE-CVE-2025-22889: Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processor with Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access. Affects intel-ucode versions < 20250812-r0. Fixed in 20250812-r0. How to fix ↓
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Background
The intel-ucode package provides microcode updates for Intel processors, enhancing their performance and security. It is crucial for maintaining the stability and security of systems running Intel hardware. This package is particularly important for servers and high-performance computing environments where Intel Xeon processors are prevalent. However, certain versions of this package are vulnerable to a privilege escalation issue that could be exploited by a local attacker.
Vulnerability Detail
The vulnerability identified as ALPINE-CVE-2025-22889 arises from improper handling of overlap between protected memory ranges in some Intel Xeon 6 processors with Intel TDX technology. This flaw may allow a privileged user to escalate their privileges through local access, potentially compromising the security of the system. The issue is significant as it affects multiple versions of the intel-ucode package across various Alpine Linux releases.
How To Fix
Minimum fixed version
20250812-r0
This is the first release that contains the fix.
sudo apk add --upgrade intel-ucodeTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the available patch by updating the package as described above.
Conclusion
In summary, the ALPINE-CVE-2025-22889 vulnerability in the intel-ucode package poses a significant risk of privilege escalation for systems using affected versions. It is crucial to update to the fixed version 20250812-r0 to ensure system security. Regular monitoring and timely updates are essential for maintaining a secure environment.
See every vulnerability recorded for intel-ucode →
FAQ
The vulnerability may allow a privileged user to escalate their privileges, potentially compromising the system's security.
The affected versions include those in Alpine Linux v3.19, v3.20, v3.21, and v3.22 prior to the fixed version 20250812-r0.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
Currently, there are no known workarounds. The recommended action is to update to the patched version.
If immediate updating is not possible, consider isolating the affected system from sensitive operations until the patch can be applied.
References
Related vulnerabilities
Recent vulnerabilities recorded for intel-ucode.
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