CVE-2021-47620 (GCVE-0-2021-47620)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:08 – Updated: 2025-12-18 11:38
VLAI?
Title
Bluetooth: refactor malicious adv data check
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 048acfa4daf167b007b6bd8bef474e90c2282a5f , < 305e92f525450f3e1b5f5c9dc7eadb152d66a082 (git)
Affected: 7d4238edd3bf8b8c75571cc3b382bc10438ac588 , < 7889b38a7f21ed19314f83194622b195d328465c (git)
Affected: 185c77cbb53bc7481acc5a0b4e6119bbe393d561 , < 5a539c08d743d9910631448da78af5e961664c0e (git)
Affected: 4a1491432394b22e585a185ffca49086e4046aae , < 8819f93cd4a443dfe547aa622b21f723757df3fb (git)
Affected: 24161b9c43de966789d5956428f45002d10f878e , < 835d3706852537bf92eb23eb8635b8dee0c0aa67 (git)
Affected: ffc9019bd991707701273c2e5d8aed472229fc4d , < 83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba (git)
Affected: 2de0e6a71ceb056e17e4684dce8b7640367996f9 , < bcea886771c3f22a590c8c8b9139a107bd7f1e1c (git)
Affected: 640a476e38fce6c70c738ac09e5167e34f570303 , < 5c968affa804ba98c3c603f37ffea6fba618025e (git)
Affected: 3a56ef719f0b9682afb8a86d64b2399e36faa4e6 , < 899663be5e75dc0174dc8bda0b5e6826edf0b29a (git)
Create a notification for this product.
    Linux Linux Affected: 4.4.300 , < 4.4.302 (semver)
Affected: 4.9.298 , < 4.9.300 (semver)
Affected: 4.14.263 , < 4.14.265 (semver)
Affected: 4.19.226 , < 4.19.228 (semver)
Affected: 5.4.174 , < 5.4.176 (semver)
Affected: 5.10.94 , < 5.10.96 (semver)
Affected: 5.15.17 , < 5.15.19 (semver)
Affected: 5.16.3 , < 5.16.5 (semver)
Create a notification for this product.
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Added\\ncheck to beginning of loop processing so that it doesn\u0027t get checked\\nafter ptr has been advanced.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.302\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.300\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.265\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.228\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.176\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.96\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-10T07:12:47.245Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47620\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-10T07:12:47.245Z\", \"dateReserved\": \"2024-06-20T11:03:43.235Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-20T11:08:09.320Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.