CVE-2021-3322: Zephyrproject Zephyr

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Unexpected Pointer Aliasing in IEEE 802154 Fragment Reassembly in Zephyr. Zephyr versions >= >=2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-p86r-gc4r-4mq3

Affected products

• Zephyrproject Zephyr: from 2.4.0, before 2.5.0 (fixed in 2.5.0)

Published 2021-10-12. Last modified 2026-06-17.