CVE-2026-43069: Linux kernel · Bluetooth: hci_ll: Fix firmware leak on error path
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 23:24 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 5 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
Description
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.
References
- git.kernel.org/stable/c/95e8601af227b2b4390eecf8db6abdb9f6a91f17 (opens in a new tab)
- git.kernel.org/stable/c/e6d95488c8c964d1df0d3e1db44c958706311e86 (opens in a new tab)
- git.kernel.org/stable/c/b2dfbf1b5ff192cefd49574b951a4af9ddd32213 (opens in a new tab)
- git.kernel.org/stable/c/28904375d54b436a757641fb0331537778c0de5a (opens in a new tab)
- git.kernel.org/stable/c/5213ef54528dd1ac79b846e30d8f72ce092794aa (opens in a new tab)
- git.kernel.org/stable/c/9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074b (opens in a new tab)
- git.kernel.org/stable/c/a7803df606a7d22e896b030f619e1d9d20ae0c6b (opens in a new tab)
- git.kernel.org/stable/c/31148a7be723aa9f2e8fbd62424825ab8d577973 (opens in a new tab)