CVE-2026-78118: zephyr 2.2.0 to before 4.5.0

Affected technology

zephyr · 2.2.0 to before 4.5.0
zephyrproject

Component: Not specified by the source
Function: z_timer_expiration_handler, z_waitq_head
File: kernel/include/wait_q.h, kernel/msg_q.c, kernel/mutex.c, kernel/sched.c, kernel/stack.c, kernel/timer.c, kernel/userspace/userspace.c

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

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 7.0/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.