CVE-2023-1901: HCI send_sync Dangling Semaphore Reference Re-use
First published: Mon Jul 10 2023(Updated: )
The bluetooth HCI host layer logic not clearing a global reference to a semaphore after synchronously sending HCI commands may allow a malicious HCI Controller to cause the use of a dangling reference in the host layer, leading to a crash (DoS) or potential RCE on the Host layer.
Credit: vulnerabilities@zephyrproject.org vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyrproject Zephyr | <=3.3.0 |
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Frequently Asked Questions
What is CVE-2023-1901?
CVE-2023-1901 is a vulnerability in the bluetooth HCI host layer logic that could allow a malicious HCI Controller to cause a crash (DoS) or potential RCE on the Host layer.
How severe is CVE-2023-1901?
CVE-2023-1901 has a severity level of high with a severity value of 8.
Which software is affected by CVE-2023-1901?
Zephyrproject Zephyr version 3.3.0 and earlier are affected by CVE-2023-1901.
How can CVE-2023-1901 be exploited?
CVE-2023-1901 can be exploited by a malicious HCI Controller to exploit a dangling reference in the host layer and potentially cause a crash or remote code execution.
How can I fix CVE-2023-1901?
To fix CVE-2023-1901, it is recommended to update to a version of Zephyrproject Zephyr that is later than 3.3.0.
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