PT-2023-12352 · Zephyr · Zephyr

Szymonh · Published 2023-01-11 · Updated 2023-01-18 · CVE-2021-3966

Positive Technologies (AI Summary)

CVSS v3.1

9.6

Critical

Base vector

AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H

Name of the Vulnerable Software and Affected Versions Zephyr versions prior to 2.4.0

Description The issue is related to a buffer overflow in the implementation of net buf add mem in the USB device Bluetooth class.

Recommendations For versions prior to 2.4.0, update to version 2.4.0 or later to resolve the issue.

Fix

Buffer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-120

CWE-122

Related Identifiers

CVE-2021-3966

GHSA-HFXQ-3W6X-FV2M

Affected Products

Zephyr

References · 5

• https://osv.dev/vulnerability/CVE-2021-3966 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3966 · Security Note
• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m · Note
• https://t.me/cvenotify/42336 · Telegram Post
• https://t.me/cibsecurity/56328 · Telegram Post