CVE-2022-3806 Bluetooth HCI Error Handling Double Free
Inconsistent error handling in Bluetooth HCI allows a double free, potentially causing denial of service or code execution in Zephyr RTOS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-3806?
CVE-2022-3806 is a critical use after free vulnerability in Zephyrproject Zephyr, published on 19 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Inconsistent handling of error cases in bluetooth hci may lead to a double free condition of a network buffer.
Weakness: CWE-415
Which versions are affected by CVE-2022-3806?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2022-3806?
No fix has been published for CVE-2022-3806 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-3806 being exploited?
There is no known exploitation of CVE-2022-3806 in the wild and no public exploit code.
Other vulnerabilities in Zephyrproject Zephyr
- CVE-2026-5067 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
- CVE-2017-14199 Memory corruption in getaddrinfo
- CVE-2018-1000800 Null dereference in n/a
- CVE-2021-3329 DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
- CVE-2023-0397 DoS: Invalid Initialization in le_read_buffer_size_complete
Sources
Also known as GHSA-w525-fm68-ppq3.