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CVE-2025-38242 mm: userfaultfd: fix race of userfaultfd_move and swap cache

🗓️ 09 Jul 2025 10:42:25Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Fixes race issues in userfaultfd_move affecting swap cache in Linux kernel code.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "mm/userfaultfd.c"
    ],
    "versions": [
      {
        "version": "adef440691bab824e39c1b17382322d195e1fab0",
        "lessThan": "4c443046d8c9ed8724a4f4c3c2457d3ac8814b2f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "adef440691bab824e39c1b17382322d195e1fab0",
        "lessThan": "db2ca8074955ca64187a4fb596dd290b9c446cd3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "adef440691bab824e39c1b17382322d195e1fab0",
        "lessThan": "0ea148a799198518d8ebab63ddd0bb6114a103bc",
        "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/userfaultfd.c"
    ],
    "versions": [
      {
        "version": "6.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.37",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.15.5",
        "lessThanOrEqual": "6.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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