CVE-2021-3454

MEDIUM

Zephyr 2.4.0-2.5.9 - Denial of Service via Truncated L2CAP K-frame

Title source: llm

Description

Truncated L2CAP K-frame causes assertion failure. Zephyr versions >= 2.4.0, >= v.2.50 contain Improper Handling of Length Parameter Inconsistency (CWE-130), Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3

References (1)

Core 1

Core References

Patch, Third Party Advisory x_refsource_misc

http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3

Scores

CVSS v3 4.3

EPSS 0.0093

EPSS Percentile 55.8%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE

CWE-130 CWE-617

Status published

Products (1)

zephyrproject/zephyr 2.4.0 - 2.6.0

Published Oct 19, 2021

Tracked Since Feb 18, 2026