CVE-2021-3329

Public Exploit
DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer

Description

Lack of proper validation in HCI Host stack initialization can cause a crash of the bluetooth stack

Categories

9.6
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.05%
Vendor Advisory atlassian.net
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-117 issue tracking exploit vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3329?
CVE-2021-3329 has been scored as a critical severity vulnerability.
How to fix CVE-2021-3329?
To fix CVE-2021-3329, 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-2021-3329 being actively exploited in the wild?
It is possible that CVE-2021-3329 is being exploited or will be exploited in a near future based on public information. 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-2021-3329?
CVE-2021-3329 affects zephyrproject-rtos zephyr.
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