CVE-2026-43069 Details
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.
A resource leak vulnerability has been identified in the Linux kernel Bluetooth controller interface, specifically within the hci_ll driver. This issue arises when the download_firmware() function successfully requests firmware but receives invalid content (either empty or zero-sized). In such cases, the function fails to release the firmware, leading to a resource leak. The vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed in the Linux kernel. Users should upgrade to the latest version where this issue has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/28904375d54b436a757641fb0331537778c0de5a | kernel.org | Patch |
| https://git.kernel.org/stable/c/31148a7be723aa9f2e8fbd62424825ab8d577973 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5213ef54528dd1ac79b846e30d8f72ce092794aa | kernel.org | Patch |
| https://git.kernel.org/stable/c/95e8601af227b2b4390eecf8db6abdb9f6a91f17 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9ecbfd93cd6de6c78cb7fd51fe079e36c7ff074b | kernel.org | Patch |
| https://git.kernel.org/stable/c/a7803df606a7d22e896b030f619e1d9d20ae0c6b | kernel.org | Patch |
| https://git.kernel.org/stable/c/b2dfbf1b5ff192cefd49574b951a4af9ddd32213 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e6d95488c8c964d1df0d3e1db44c958706311e86 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.12, < 5.10.253 >= 5.11, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.131 >= 6.7, < 6.12.80 >= 6.13, < 6.18.21 >= 6.19, < 6.19.11 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 29, 2026 | Initial Analysis | [email protected] |
| May 5, 2026 | New CVE Received | kernel.org |