Privilege Escalation Vulnerability in Intel Microcode Package
Summary
ALPINE-CVE-2025-32086: Improperly implemented security check for standard in the DDRIO configuration for some Intel(R) Xeon(R) 6 Processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of... Affects intel-ucode versions < 20250812-r0. Fixed in 20250812-r0. How to fix ↓
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Background
The 'intel-ucode' package is essential for providing microcode updates to Intel processors, enhancing their performance and security. This package is particularly crucial for systems utilizing Intel Xeon processors, which are widely used in servers and enterprise environments. The vulnerability in question affects the DDRIO configuration, potentially compromising the security of systems using Intel's Software Guard Extensions (SGX) or Trusted Domain Extensions (TDX).
Vulnerability Detail
The vulnerability, identified as ALPINE-CVE-2025-32086, arises from an improperly implemented security check in the DDRIO configuration for certain Intel Xeon 6 processors. This flaw allows a privileged user to escalate their privileges via local access, which could lead to unauthorized access to sensitive data or system controls. The issue is particularly concerning for environments where security is paramount, as it could undermine the integrity of systems relying on Intel's security features.
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
As a temporary measure, users can limit access to the affected systems to trusted personnel only, thereby reducing the risk of privilege escalation until the package can be updated. Additionally, monitoring system logs for unusual access patterns may help identify potential exploitation attempts.
Conclusion
The ALPINE-CVE-2025-32086 vulnerability in the 'intel-ucode' package poses a serious risk of privilege escalation for systems using affected Intel Xeon processors. Users are strongly advised to update to the patched version to ensure their systems remain secure. Implementing the recommended fixes and workarounds will help mitigate potential threats.
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FAQ
The vulnerability allows a privileged user to escalate their privileges due to a security check failure in the DDRIO configuration.
The vulnerability affects 'intel-ucode' in Alpine versions 3.19, 3.20, 3.21, and 3.22.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
Exploitation of this vulnerability could lead to unauthorized access to sensitive data and system controls, posing significant security risks.
Yes, a patch is available in the form of the updated package version 20250812-r0. Users should upgrade to this version to mitigate the vulnerability.
References
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