CVE-2021-3321: Integer Underflow
First published: Tue Oct 12 2021(Updated: )
Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99
Credit: vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyrproject Zephyr | >=2.4.0<2.5.0 |
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Frequently Asked Questions
What is CVE-2021-3321?
CVE-2021-3321 is a vulnerability in Zephyr that allows for an integer underflow leading to a buffer overflow.
What is the severity of CVE-2021-3321?
The severity of CVE-2021-3321 is high with a CVSS score of 8.8.
What is the affected software for CVE-2021-3321?
The affected software for CVE-2021-3321 is Zephyr versions 2.4.0 to 2.5.0.
How can I fix CVE-2021-3321?
To fix CVE-2021-3321, it is recommended to upgrade to a version of Zephyr that is not affected by the vulnerability.
Where can I find more information about CVE-2021-3321?
You can find more information about CVE-2021-3321 at the following link: http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99
- collector/nvd-index
- vendor/zephyrproject
- canonical/zephyrproject zephyr
- version/zephyrproject zephyr/2.4.0