PT-2026-47704 · Zephyrproject Rtos · Zephyr

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-5068

NVD

CVSS v3.1

7.6

High

Base vector

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

A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan ops.alloc buf) and the chosen RX pool has a user data size smaller than 2 bytes, the segmentation counter stored in the net buf user data area is written out of bounds in l2cap chan le recv seg (subsys/bluetooth/host/l2cap.c). The observed effects are an AddressSanitizer abort and, without ASan, heap corruption / fatal error.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-5068

Affected Products

Zephyr

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-5068 · Security Note
• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-qrcq-hxwj-mqxm · Note