CVE-2026-43069

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux371805522f870986144fcd88727a47858e364a2c < 95e8601af227b2b4390eecf8db6abdb9f6a91f17affected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < e6d95488c8c964d1df0d3e1db44c958706311e86affected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < b2dfbf1b5ff192cefd49574b951a4af9ddd32213affected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < 28904375d54b436a757641fb0331537778c0de5aaffected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < 5213ef54528dd1ac79b846e30d8f72ce092794aaaffected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < 9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074baffected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < a7803df606a7d22e896b030f619e1d9d20ae0c6baffected
LinuxLinux371805522f870986144fcd88727a47858e364a2c < 31148a7be723aa9f2e8fbd62424825ab8d577973affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.253 <= 5.10.*unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.168 <= 6.1.*unaffected
LinuxLinux6.6.131 <= 6.6.*unaffected
LinuxLinux6.12.80 <= 6.12.*unaffected
LinuxLinux6.18.21 <= 6.18.*unaffected
LinuxLinux6.19.11 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References