CVE-2022-3806 — Inconsistent handling of error cases in bluetooth hci may lead to a double free

Inconsistent handling of error cases in bluetooth hci may lead to a double free condition of a network buffer.

01What is this vulnerability?

Inconsistent handling of error cases in bluetooth hci may lead to a double free condition of a network buffer.

02Affected products

Vendor	Product	Versions
zephyrproject-rtos	zephyr	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-01-19T00:00:00.000Z
• Last modified: 2025-04-03T19:54:53.538Z

09References

• github.com — https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w525-fm68-…