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CVE-2023-54278 s390/vmem: split pages when debug pagealloc is enabled

🗓️ 30 Dec 2025 12:16:06Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 21 Views

CVE-2023-54278 fixes boot crash in s390 vmem by splitting large mappings into 4k pages when debug pagealloc is enabled.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/mm/vmem.c"
    ],
    "versions": [
      {
        "version": "bb1520d581a3a46e2d6e12bb74604ace33404de5",
        "lessThan": "601e467e29a960f7ab7ec4075afc6a68c3532a65",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb1520d581a3a46e2d6e12bb74604ace33404de5",
        "lessThan": "edc1e4b6e26536868ef819a735e04a5b32c10589",
        "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/mm/vmem.c"
    ],
    "versions": [
      {
        "version": "6.3",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.3",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.4.10",
        "lessThanOrEqual": "6.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.5",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 19:58Current
EPSS0.00155
21