CVE-2023-53205

high

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.

References

https://git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26

https://git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5

https://git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435

https://git.kernel.org/stable/c/0bc380beb78aa352eadbc21d934dd9606fcee808

Details

Source: Mitre, NVD

Published: 2025-09-15

Updated: 2025-09-15

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Severity: High

EPSS

EPSS: 0.00018