CVE-2026-15894: zephyr 3.4.0 to before 4.4.2

Affected technology

zephyr · 3.4.0 to before 4.4.2
zephyrproject

Component: Not specified by the source
Function: bt_mesh_scan_cb, bt_mesh_sol_recv, sol_pdu_decrypt
File: subsys/bluetooth/mesh/adv.c, subsys/bluetooth/mesh/solicitation.c

Attack conditions (Vendor/CNA, CVSS 3.1): Adjacent network · No privileges required · No user interaction required

What an attacker can do

An attacker can therefore append extra AD structures or padding after the Solicitation Service Data to make buf->len exceed 17. bt_mesh_scan_cb() is registered directly as the BLE scan callback, so buf is raw, unauthenticated advertising data received over the air. Vendor/CNA’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high.