Privilege Escalation Vulnerability in Intel Microcode for Debian Packages
Summary
CVE-2025-24305: Insufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware for some Intel(R) Xeon(R) processors 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
Intel Microcode is a critical component that updates the processor's internal control logic, enhancing performance and security. It is particularly important for Intel Xeon processors, which are widely used in servers and high-performance computing environments. This vulnerability affects multiple versions of the Intel Microcode package across various Debian releases, potentially compromising system integrity.
Vulnerability Detail
The vulnerability identified as CVE-2025-24305 arises from insufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware for certain Intel Xeon processors. This flaw may allow a privileged user to escalate their privileges via local access, posing a significant security risk to systems utilizing affected processors. The vulnerability is rooted in the firmware's design, which fails to adequately manage control flow, leading to potential exploitation.
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. It is recommended to apply the patch as soon as it becomes available to mitigate the risk.
Conclusion
CVE-2025-24305 represents a significant security risk for systems using affected Intel Microcode packages in Debian. Users are strongly encouraged to update their packages promptly to protect against potential privilege escalation attacks. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for intel-ucode →
FAQ
CVE-2025-24305 is a vulnerability in the Intel Microcode that may allow a privileged user to escalate their privileges through local access.
The vulnerability affects Intel Microcode packages across Debian versions 11, 12, 13, and 14.
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 without requiring any signup.
While there are no specific workarounds available, it is crucial to monitor for updates and apply them as soon as possible to mitigate risks.
You can refer to the official Debian security advisories or the Vulert platform for real-time alerts and information regarding vulnerabilities.
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