Medium severity6.5NVD Advisory· Published Sep 7, 2021· Updated Jun 17, 2026
CVE-2021-34144
CVE-2021-34144
Description
The Bluetooth Classic implementation in the Zhuhai Jieli AC6366C BT SDK through 0.9.1 does not properly handle the reception of truncated LMP_SCO_Link_Request packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Zhuhai Jieli/AC6366C BT SDKdescription
- Range: <=0.9.1
Patches
Vulnerability mechanics
References
2- dl.packetstormsecurity.net/papers/general/braktooth.pdfnvdTechnical DescriptionThird Party Advisory
- launchstudio.bluetooth.com/ListingDetails/91371nvdThird Party Advisory
News mentions
0No linked articles in our index yet.