Vulnerabilities CVE-2023-53205

CVE-2023-53205

High

Open

TLP:CLEAR

KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler

NVD CVE.org

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Description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler We do check for target CPU == -1, but this might change at the time we are going to use it. Hold the physical target CPU in a local variable to avoid out-of-bound accesses to the cpu arrays.

Details

CVSS Score: 7.3
EPSS Score ⓘ: 0.16%

5.1th percentile
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H
Confidence: 90%
Published: Sep 15, 2025
Last Modified: Aug 5, 2026

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