CVE-2021-3455
Medium
Description
Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp
SeverityMedium
CVSS4.3
Exploit probability—
ProductZephyr
PublishedOct 19, 2021
First seenOct 19, 2021
Weakness typeCWE-416Use after free
How to fix
Update
- zephyrproject zephyr2.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zephyrproject zephyr | 2.4.0 ≤ v < 2.6.0 | 2.6.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.