What is CVE-2021-31611?

CVE-2021-31611 is a vulnerability in the Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices that allows attackers in radio range to deadlock a device via a crafted LMP packet.

How does CVE-2021-31611 affect Zhuhai Jieli AC690X and AC692X devices?

CVE-2021-31611 affects Zhuhai Jieli AC690X and AC692X devices by allowing attackers in radio range to deadlock the device using a specially crafted LMP packet.

What is the severity of CVE-2021-31611?

The severity of CVE-2021-31611 is medium with a CVSS score of 5.7.

How can I fix CVE-2021-31611?

To mitigate CVE-2021-31611, users of affected Zhuhai Jieli AC690X and AC692X devices need to manually reboot the device.

Where can I find more information about CVE-2021-31611?

More information about CVE-2021-31611 can be found on the Zhuhai Jieli website, Packet Storm Security, and the Bluetooth Launch Studio website.

Vulnerability/
CVE-2021-31611

medium

5.7

CWE

667

7/9/2021

3/5/2022

CVE-2021-31611

First published: Tue Sep 07 2021(Updated: )

The Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices does not properly handle an out-of-order LMP Setup procedure that is followed by a malformed LMP packet, allowing attackers in radio range to deadlock a device via a crafted LMP packet. The user needs to manually reboot the device to restore communication.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Zh-jieli Ac6901 Firmware
Zh-jieli Ac6901
Zh-jieli Ac6925 Firmware
Zh-jieli Ac6925
Zh-jieli Ac6926 Firmware
Zh-jieli Ac6926
Zh-jieli Ac6928 Firmware
Zh-jieli Ac6928
Zh-jieli Ac6921 Firmware
Zh-jieli Ac6921

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Reference Links

Frequently Asked Questions

What is CVE-2021-31611?
CVE-2021-31611 is a vulnerability in the Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices that allows attackers in radio range to deadlock a device via a crafted LMP packet.
How does CVE-2021-31611 affect Zhuhai Jieli AC690X and AC692X devices?
CVE-2021-31611 affects Zhuhai Jieli AC690X and AC692X devices by allowing attackers in radio range to deadlock the device using a specially crafted LMP packet.
What is the severity of CVE-2021-31611?
The severity of CVE-2021-31611 is medium with a CVSS score of 5.7.
How can I fix CVE-2021-31611?
To mitigate CVE-2021-31611, users of affected Zhuhai Jieli AC690X and AC692X devices need to manually reboot the device.
Where can I find more information about CVE-2021-31611?
More information about CVE-2021-31611 can be found on the Zhuhai Jieli website, Packet Storm Security, and the Bluetooth Launch Studio website.

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