CVE-2025-54518
kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation
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Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 15, 2026
Updated · Unknown
Description
A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE not specified