CVE-2023-52609 (GCVE-0-2023-52609)

Vulnerability from cvelistv5 – Published: 2024-03-18 10:07 – Updated: 2026-05-11 19:30
VLAI?
Title
binder: fix race between mmput() and do_exit()
Summary
In the Linux kernel, the following vulnerability has been resolved: binder: fix race between mmput() and do_exit() Task A calls binder_update_page_range() to allocate and insert pages on a remote address space from Task B. For this, Task A pins the remote mm via mmget_not_zero() first. This can race with Task B do_exit() and the final mmput() refcount decrement will come from Task A. Task A | Task B ------------------+------------------ mmget_not_zero() | | do_exit() | exit_mm() | mmput() mmput() | exit_mmap() | remove_vma() | fput() | In this case, the work of ____fput() from Task B is queued up in Task A as TWA_RESUME. So in theory, Task A returns to userspace and the cleanup work gets executed. However, Task A instead sleep, waiting for a reply from Task B that never comes (it's dead). This means the binder_deferred_release() is blocked until an unrelated binder event forces Task A to go back to userspace. All the associated death notifications will also be delayed until then. In order to fix this use mmput_async() that will schedule the work in the corresponding mm->async_put_work WQ instead of Task A.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 95b1d336b0642198b56836b89908d07b9a0c9608 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 252a2a5569eb9f8d16428872cc24dea1ac0bb097 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 7e7a0d86542b0ea903006d3f42f33c4f7ead6918 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 98fee5bee97ad47b527a997d5786410430d1f0e9 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 6696f76c32ff67fec26823fc2df46498e70d9bf3 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 67f16bf2cc1698fd50e01ee8a2becc5a8e6d3a3e (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 77d210e8db4d61d43b2d16df66b1ec46fad2ee01 (git)
Affected: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 , < 9a9ab0d963621d9d12199df9817e66982582d5a5 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 4.19.306 , ≤ 4.19.* (semver)
Unaffected: 5.4.268 , ≤ 5.4.* (semver)
Unaffected: 5.10.209 , ≤ 5.10.* (semver)
Unaffected: 5.15.148 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "vulnStatus": "Awaiting Analysis"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52609\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-18T11:15:07.743\",\"lastModified\":\"2025-03-10T15:28:37.830\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\u0027s 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-\u003easync_put_work WQ instead of Task A.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: binder: corrige la ejecuci\u00f3n entre mmput() y do_exit() La tarea A llama a binder_update_page_range() para asignar e insertar p\u00e1ginas en un espacio de direcciones remoto desde la tarea B. Para esto, la tarea A fija el mm remoto a trav\u00e9s de mmget_not_zero() primero. Esto puede competir con la Tarea B do_exit() y la disminuci\u00f3n final del recuento de mmput() provendr\u00e1 de la Tarea A. Tarea A | Tarea B ------------------+------------------ mmget_not_zero() | | hacer_salir() | salida_mm() | mmput() mmput() | salida_mmap() | eliminar_vma() | salida() | En este caso, el trabajo de ____fput() de la Tarea B se pone en cola en la Tarea A como TWA_RESUME. Entonces, en teor\u00eda, la Tarea A regresa al espacio de usuario y se ejecuta el trabajo de limpieza. Sin embargo, la Tarea A duerme, esperando una respuesta de la Tarea B que nunca llega (est\u00e1 muerta). Esto significa que binder_deferred_release() est\u00e1 bloqueado hasta que un evento de carpeta no relacionado obligue a la Tarea A a regresar al espacio de usuario. Todas las notificaciones de defunci\u00f3n asociadas tambi\u00e9n se retrasar\u00e1n hasta entonces. Para solucionar este problema, utilice mmput_async() que programar\u00e1 el trabajo en el mm-\u0026gt;async_put_work WQ correspondiente en lugar de la Tarea A.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.29\",\"versionEndExcluding\":\"4.19.306\",\"matchCriteriaId\":\"D8EE6C94-F3E4-4963-8B5A-9BE8CD1565DF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.268\",\"matchCriteriaId\":\"991BF737-6083-429B-ACD5-FB27D4143E2F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.209\",\"matchCriteriaId\":\"74979A03-4B10-4815-AE3E-C8C0D2FDAA39\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.148\",\"matchCriteriaId\":\"2ED0CDB9-61B0-408E-B2A8-5199107F7868\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.75\",\"matchCriteriaId\":\"070D0ED3-90D0-4F95-B1FF-57D7F46F332D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.14\",\"matchCriteriaId\":\"5C6B50A6-3D8B-4CE2-BDCC-A098609CBA14\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.2\",\"matchCriteriaId\":\"7229C448-E0C9-488B-8939-36BA5254065E\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/252a2a5569eb9f8d16428872cc24dea1ac0bb097\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing 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    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2023-52609\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:30:17.511Z\", \"dateReserved\": \"2024-03-06T09:52:12.088Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-18T10:07:45.486Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.