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CVE-2021-47360 (GCVE-0-2021-47360)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2026-05-23 15:19
VLAI
Title
binder: make sure fd closes complete
Summary
In the Linux kernel, the following vulnerability has been resolved: binder: make sure fd closes complete During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object cleanup may close 1 or more fds. The close operations are completed using the task work mechanism -- which means the thread needs to return to userspace or the file object may never be dereferenced -- which can lead to hung processes. Force the binder thread back to userspace if an fd is closed during BC_FREE_BUFFER handling.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:37 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 80cd795630d6526ba729a089a435bf74a57af927 , < aa2c274c279ff365a06a4cba263f04965895166e (git)
Affected: 80cd795630d6526ba729a089a435bf74a57af927 , < d5b0473707fa53b03a5db0256ce62b2874bddbc7 (git)
Affected: 80cd795630d6526ba729a089a435bf74a57af927 , < b95483d8d94b41fa31a84c1d86710b7907a37621 (git)
Affected: 80cd795630d6526ba729a089a435bf74a57af927 , < 5fdb55c1ac9585eb23bb2541d5819224429e103d (git)
Affected: 27564d8d5d12d2ff197055346069c6bdbe08a8c2 (git)
Affected: 4.20.1 , < 4.21 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.150 , ≤ 5.4.* (semver)
Unaffected: 5.10.70 , ≤ 5.10.* (semver)
Unaffected: 5.14.9 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.619Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47360\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T17:37:32.711122Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-17T17:37:33.934Z\"}}], \"cna\": {\"title\": \"binder: make sure fd closes complete\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"80cd795630d6526ba729a089a435bf74a57af927\", \"lessThan\": \"aa2c274c279ff365a06a4cba263f04965895166e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"80cd795630d6526ba729a089a435bf74a57af927\", \"lessThan\": \"d5b0473707fa53b03a5db0256ce62b2874bddbc7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"80cd795630d6526ba729a089a435bf74a57af927\", \"lessThan\": \"b95483d8d94b41fa31a84c1d86710b7907a37621\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"80cd795630d6526ba729a089a435bf74a57af927\", \"lessThan\": \"5fdb55c1ac9585eb23bb2541d5819224429e103d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"27564d8d5d12d2ff197055346069c6bdbe08a8c2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4.20.1\", \"lessThan\": \"4.21\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/android/binder.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.150\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.70\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.14.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/android/binder.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e\"}, {\"url\": \"https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7\"}, {\"url\": \"https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621\"}, {\"url\": \"https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbinder: make sure fd closes complete\\n\\nDuring BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object\\ncleanup may close 1 or more fds. The close operations are\\ncompleted using the task work mechanism -- which means the thread\\nneeds to return to userspace or the file object may never be\\ndereferenced -- which can lead to hung processes.\\n\\nForce the binder thread back to userspace if an fd is closed during\\nBC_FREE_BUFFER handling.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.150\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.70\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.14.9\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.20.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:19:48.545Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47360\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:19:48.545Z\", \"dateReserved\": \"2024-05-21T14:58:30.809Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:03:29.234Z\", \"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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.