Medium 5.5Published May 5, 2026

CVE-2026-43069Bluetooth: hci_ll: Fix firmware leak on error path

Updated under an hour ago (Oct 26, 2026, 7:00 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	371805522f870986144fcd88727a47858e364a2c builds before 95e8601af227b2b4390eecf8db6abdb9f6a91f17; from 371805522f870986144fcd88727a47858e364a2c before e6d95488c8c964d1df0d3e1db44c958706311e86; from 371805522f870986144fcd88727a47858e364a2c before b2dfbf1b5ff192cefd49574b951a4af9ddd32213; 371805522f870986144fcd88727a47858e364a2c builds before 28904375d54b436a757641fb0331537778c0de5a; 371805522f870986144fcd88727a47858e364a2c builds before 5213ef54528dd1ac79b846e30d8f72ce092794aa; 371805522f870986144fcd88727a47858e364a2c builds before 9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074b; from 371805522f870986144fcd88727a47858e364a2c before a7803df606a7d22e896b030f619e1d9d20ae0c6b; 371805522f870986144fcd88727a47858e364a2c builds before 31148a7be723aa9f2e8fbd62424825ab8d577973	CNA record
linux linux_kernel linux:linux_kernel	from 4.12 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 7.0; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/95e8601af227b2b4390eecf8db6abdb9f6a91f17	patch
https://git.kernel.org/stable/c/e6d95488c8c964d1df0d3e1db44c958706311e86	patch
https://git.kernel.org/stable/c/b2dfbf1b5ff192cefd49574b951a4af9ddd32213	patch
https://git.kernel.org/stable/c/28904375d54b436a757641fb0331537778c0de5a	patch
https://git.kernel.org/stable/c/5213ef54528dd1ac79b846e30d8f72ce092794aa	patch
https://git.kernel.org/stable/c/9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074b	patch
https://git.kernel.org/stable/c/a7803df606a7d22e896b030f619e1d9d20ae0c6b	patch
https://git.kernel.org/stable/c/31148a7be723aa9f2e8fbd62424825ab8d577973	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.