CVE-2023-1901

HCI send_sync Dangling Semaphore Reference Re-use

Description

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.

Categories

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory github.com
Affected: zephyrproject-rtos Zephyr
Published at:
Updated at:

References

Link Tags
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-xvvm-8mcm-9cq3 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-1901?
CVE-2023-1901 has been scored as a medium severity vulnerability.
How to fix CVE-2023-1901?
To fix CVE-2023-1901, 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-2023-1901 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-1901 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.
What software or system is affected by CVE-2023-1901?
CVE-2023-1901 affects zephyrproject-rtos Zephyr.
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