CVE-2023-53205

HIGH EPSS 4.8%
Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.13  –  <5.15.121
linuxlinux_kernel*≥5.16  –  <6.1.39
linuxlinux_kernel*≥6.2  –  <6.4.4

References 4

  • git.kernel.org https://git.kernel.org/stable/c/0bc380beb78aa352eadbc21d934dd9606fcee808
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0bc380beb78aa352eadbc21d934dd9606fcee808
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26
    Patch