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CVE-2025-68293 mm/huge_memory: fix NULL pointer deference when splitting folio

🗓️ 16 Dec 2025 15:06:13Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 21 Views

Fix NULL pointer dereference when splitting folio by checking mapping before accessing flags.

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"
    ],
    "versions": [
      {
        "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
        "lessThan": "592db83615a9f0164472ec789c2ed34ad35f732f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
        "lessThan": "d1b83fbacd4397a1d2f8c6b13427a8636ae2b307",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
        "lessThan": "cff47b9e39a6abf03dde5f4f156f841b0c54bba0",
        "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"
    ],
    "versions": [
      {
        "version": "6.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.61",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.11",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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