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CVE-2025-40230 mm: prevent poison consumption when splitting THP

🗓️ 04 Dec 2025 15:31:21Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 18 Views

CVE-2025-40230 prevents poison during THP splitting when userspace memory errors occur.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "mm/huge_memory.c",
      "mm/migrate.c"
    ],
    "versions": [
      {
        "version": "b1f202060afeb7fcb98473929d26fd3d2093b067",
        "lessThan": "6fc0a7c99e973a50018c8b4be34914a1b5c7b383",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b1f202060afeb7fcb98473929d26fd3d2093b067",
        "lessThan": "92acf4b04f255d2f0f6770bb0d0a208d8ffb2b77",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b1f202060afeb7fcb98473929d26fd3d2093b067",
        "lessThan": "841a8bfcbad94bb1ba60f59ce34f75259074ae0d",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "mm/huge_memory.c",
      "mm/migrate.c"
    ],
    "versions": [
      {
        "version": "6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.56",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.6",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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