CVE-2026-43069 (GCVE-0-2026-43069)

Vulnerability from cvelistv5 – Published: 2026-05-05 15:23 – Updated: 2026-05-05 15:23
VLAI?
Title
Bluetooth: hci_ll: Fix firmware leak on error path
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_ll: Fix firmware leak on error path Smatch reports: drivers/bluetooth/hci_ll.c:587 download_firmware() warn: 'fw' from request_firmware() not released on lines: 544. In download_firmware(), if request_firmware() succeeds but the returned firmware content is invalid (no data or zero size), the function returns without releasing the firmware, resulting in a resource leak. Fix this by calling release_firmware() before returning when request_firmware() succeeded but the firmware content is invalid.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 371805522f870986144fcd88727a47858e364a2c , < 95e8601af227b2b4390eecf8db6abdb9f6a91f17 (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < e6d95488c8c964d1df0d3e1db44c958706311e86 (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < b2dfbf1b5ff192cefd49574b951a4af9ddd32213 (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < 28904375d54b436a757641fb0331537778c0de5a (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < 5213ef54528dd1ac79b846e30d8f72ce092794aa (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < 9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074b (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < a7803df606a7d22e896b030f619e1d9d20ae0c6b (git)
Affected: 371805522f870986144fcd88727a47858e364a2c , < 31148a7be723aa9f2e8fbd62424825ab8d577973 (git)
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    Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.131 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/hci_ll.c"
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          "vendor": "Linux",
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              "version": "0",
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              "version": "7.0",
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_ll: Fix firmware leak on error path\n\nSmatch reports:\n\ndrivers/bluetooth/hci_ll.c:587 download_firmware() warn:\n\u0027fw\u0027 from request_firmware() not released on lines: 544.\n\nIn download_firmware(), if request_firmware() succeeds but the returned\nfirmware content is invalid (no data or zero size), the function returns\nwithout releasing the firmware, resulting in a resource leak.\n\nFix this by calling release_firmware() before returning when\nrequest_firmware() succeeded but the firmware content is invalid."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-05T15:23:28.120Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/e6d95488c8c964d1df0d3e1db44c958706311e86"
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      "title": "Bluetooth: hci_ll: Fix firmware leak on error path",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43069",
    "datePublished": "2026-05-05T15:23:28.120Z",
    "dateReserved": "2026-05-01T14:12:55.982Z",
    "dateUpdated": "2026-05-05T15:23:28.120Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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  }
}


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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.

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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.



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