Linuxsecurity

Ubuntu Intel Microcode Vulnerability Allows Privilege Escalation

First seen 4 Mar 2026, 02:09 UTC • Ubuntu

•34.3

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A vulnerability in Intel microcode affects multiple Ubuntu releases, allowing local authenticated users to escalate their privileges. Discovered by Sergiu Ghetie, the issue arises from improper handling of values in the microcode flow. The affected Ubuntu versions include 25.10, 24.04 LTS, 22.04 LTS, 20.04 LTS, 18.04 LTS, and 16.04 LTS.

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Timeline

2026-02-10

CVE-2025-31648 published

2026-03-03

Ubuntu releases advisory USN-8068 regarding the vulnerability

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Ubuntu Intel Microcode Vulnerability Allows Privilege Escalation

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