CVE-2021-3455 MEDIUM

CVE-2021-3455: Disconnecting L2CAP channel right after invalid ATT request leads freeze

Vendor Zephyrproject-Rtos
Product zephyr
Weakness CWE-416
Published October 19, 2021
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

October 19, 2021 CVE published
September 16, 2024 Record updated