{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-52609",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52609",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2024-03-18T10:07:45.486Z",
    "updatedAt": "2026-05-11T19:30:17.511Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "binder: fix race between mmput() and do_exit()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix race between mmput() and do_exit()\n\nTask A calls binder_update_page_range() to allocate and insert pages on\na remote address space from Task B. For this, Task A pins the remote mm\nvia mmget_not_zero() first. This can race with Task B do_exit() and the\nfinal mmput() refcount decrement will come from Task A.\n\n  Task A            | Task B\n  ------------------+------------------\n  mmget_not_zero()  |\n                    |  do_exit()\n                    |    exit_mm()\n                    |      mmput()\n  mmput()           |\n    exit_mmap()     |\n      remove_vma()  |\n        fput()      |\n\nIn this case, the work of ____fput() from Task B is queued up in Task A\nas TWA_RESUME. So in theory, Task A returns to userspace and the cleanup\nwork gets executed. However, Task A instead sleep, waiting for a reply\nfrom Task B that never comes (it's dead).\n\nThis means the binder_deferred_release() is blocked until an unrelated\nbinder event forces Task A to go back to userspace. All the associated\ndeath notifications will also be delayed until then.\n\nIn order to fix this use mmput_async() that will schedule the work in\nthe corresponding mm->async_put_work WQ instead of Task A.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "95b1d336b0642198b56836b89908d07b9a0c9608"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "252a2a5569eb9f8d16428872cc24dea1ac0bb097"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e7a0d86542b0ea903006d3f42f33c4f7ead6918"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "98fee5bee97ad47b527a997d5786410430d1f0e9"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6696f76c32ff67fec26823fc2df46498e70d9bf3"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67f16bf2cc1698fd50e01ee8a2becc5a8e6d3a3e"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77d210e8db4d61d43b2d16df66b1ec46fad2ee01"
            },
            {
              "version": "457b9a6f09f011ebcb9b52cc203a6331a6fc2de7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9a9ab0d963621d9d12199df9817e66982582d5a5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.29",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.29"
            },
            {
              "version": "4.19.306",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.268",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.148",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.75",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}