Medium severity6.5NVD Advisory· Published Sep 7, 2021· Updated Jun 17, 2026
CVE-2021-31612
CVE-2021-31612
Description
The Bluetooth Classic implementation on Zhuhai Jieli AC690X devices does not properly handle the reception of an oversized LMP packet greater than 17 bytes during the LMP auto rate procedure, allowing attackers in radio range to trigger a deadlock via a crafted LMP packet.
Affected products
2- Zhuhai Jieli/AC690X devicesdescription
Patches
Vulnerability mechanics
References
3- www.zh-jieli.com/product/68-cn.htmlnvdProductVendor Advisory
- launchstudio.bluetooth.com/ListingDetails/19746nvdThird Party Advisory
- dl.packetstormsecurity.net/papers/general/braktooth.pdfnvdBroken Link
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