CVE-2023-53205

🗓️ 15 Sep 2025 14:21:33Reported by LinuxType

KVM s390 diag 9c handler fixes racy access to the physical CPU number by using a local variable.

Reporter	Title	Published	Views	Family All 123
AstraLinux	Astra Linux - уязвимость в linux-5.10, linux-6.1, linux-5.15	20 May 202605:53	–	astralinux
CNNVD	Linux kernel 安全漏洞	15 Sep 202500:00	–	cnnvd
Cvelist	CVE-2023-53205 KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler	15 Sep 202514:21	–	cvelist
Debian CVE	CVE-2023-53205	15 Sep 202514:21	–	debiancve
EUVD	EUVD-2023-59878	3 Oct 202520:07	–	euvd
NVD	CVE-2023-53205	15 Sep 202515:15	–	nvd
OpenVAS	openSUSE Security Advisory (SUSE-SU-2025:03600-1)	17 Oct 202500:00	–	openvas
OpenVAS	openSUSE Security Advisory (SUSE-SU-2025:03634-1)	20 Oct 202500:00	–	openvas
OpenVAS	openSUSE Security Advisory (SUSE-SU-2025:3751-1)	27 Oct 202500:00	–	openvas
OpenVAS	SUSE: Security Advisory (SUSE-SU-2025:03600-1)	17 Oct 202500:00	–	openvas

NVD

Vulners

CNA

Node

linux linux_kernelRange5.13–5.15.121

linux linux_kernelRange5.16–6.1.39

linux linux_kernelRange6.2–6.4.4

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kvm/diag.c"
    ],
    "versions": [
      {
        "version": "87e28a15c42cc592009c32a8c20e5789059027c2",
        "lessThan": "a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "87e28a15c42cc592009c32a8c20e5789059027c2",
        "lessThan": "86bfb18bad60fc468e5f112cbbd918462a8dd435",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "87e28a15c42cc592009c32a8c20e5789059027c2",
        "lessThan": "dc7e0192c470a53d847c79a2796f9ac429477a26",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "87e28a15c42cc592009c32a8c20e5789059027c2",
        "lessThan": "0bc380beb78aa352eadbc21d934dd9606fcee808",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kvm/diag.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.121",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.39",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.4.4",
        "lessThanOrEqual": "6.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.5",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435
git	www.git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26
git	www.git.kernel.org/stable/c/0bc380beb78aa352eadbc21d934dd9606fcee808
git	www.git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5

11 May 2026 19:40Current

5.6Medium risk

Vulners AI Score5.6

CVSS 3.17.8

EPSS0.00022

CWE-787