01 Record

CVE-2026-12366

Use-after-free freeing an armed dynamically-allocated k_timer in Zephyr userspace object disposal

HighPUBLISHEDCNA: zephyr

Base score8.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

02 Description

Use-after-free freeing an armed dynamically-allocated k_timer in Zephyr userspace object disposal

Published: 2026-08-14 17:52Z2 HR AGO
Last updated: 2026-08-14 19:21Z1 HR AGO
Reserved: 2026-06-16
Assigning CNA: zephyr
Record state: PUBLISHED
Severity: High (CVSS 8.8)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses: CWE-416
SSVC decision: ExploitationnoneAutomatablenoTechnical Impacttotal
Data version: 5.2
Document digest: f2095b189078f38b5375c8fb1ad95f404e65817fc8340b66182c91e9f4a287d0

VendorProductVersionsPlatforms

zephyrprojectzephyr1.12.0 to < 4.5.0—