CVE-2023-52609 (GCVE-0-2023-52609)
Vulnerability from cvelistv5
Published
2024-03-18 10:07
Modified
2025-05-04 07:39
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 Version: 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 |
|
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{\"title\": \"binder: fix race between mmput() and do_exit()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"457b9a6f09f011ebcb9b52cc203a6331a6fc2de7\", \"lessThan\": \"95b1d336b0642198b56836b89908d07b9a0c9608\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"457b9a6f09f011ebcb9b52cc203a6331a6fc2de7\", \"lessThan\": \"252a2a5569eb9f8d16428872cc24dea1ac0bb097\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"457b9a6f09f011ebcb9b52cc203a6331a6fc2de7\", \"lessThan\": \"7e7a0d86542b0ea903006d3f42f33c4f7ead6918\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"457b9a6f09f011ebcb9b52cc203a6331a6fc2de7\", \"lessThan\": \"98fee5bee97ad47b527a997d5786410430d1f0e9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"457b9a6f09f011ebcb9b52cc203a6331a6fc2de7\", 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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. 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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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.306\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.268\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.209\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.148\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.75\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"2.6.29\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:39:48.513Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-52609\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:39:48.513Z\", \"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": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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