CVE-2021-3321

Public Exploit
Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal

Description

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

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Third-Party Advisory github.com
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99 patch third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-3321?
CVE-2021-3321 has been scored as a high severity vulnerability.
How to fix CVE-2021-3321?
To fix CVE-2021-3321, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3321 being actively exploited in the wild?
It is possible that CVE-2021-3321 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3321?
CVE-2021-3321 affects zephyrproject-rtos zephyr.
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