Critical Intel Microcode Vulnerabilities Affect Ubuntu Releases

Critical Intel Microcode Vulnerabilities Affect Ubuntu Releases

First seen 11 Nov 2025, 11:18 UTC UbuntuLinuxsecurity 39.2

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Multiple vulnerabilities were identified in Intel Microcode affecting various Ubuntu releases, including 25.10 and 24.04 LTS. Discovered by Barak Gross and others, these issues could allow local authenticated users to escalate their privileges due to improper handling of buffer restrictions and isolation mechanisms. Key CVEs include CVE-2025-20053 and CVE-2025-20109.