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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.13%

Vendor Advisory zh-jieli.com

Affected: n/a n/a

References

Link	Tags
http://www.zh-jieli.com/product/68-cn.html	product vendor advisory
https://launchstudio.bluetooth.com/ListingDetails/19746	third party advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf	broken link

Frequently Asked Questions

What is the severity of CVE-2021-31612?: CVE-2021-31612 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31612?: To fix CVE-2021-31612, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31612 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-31612 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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