What is CVE-2026-10635?

CVE-2026-10635 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 6.3/10. Published 2026-06-16.

How severe is CVE-2026-10635?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Use After Free in Zephyrproject Zephyr

CVE-2026-10635

On Xtensa targets with CONFIG_USERSPACE and CONFIG_XTENSA_MMU, the page-table code (arch/xtensa/core/ptables.c) maintains a global list, xtensa_domain_list, of active memory domains using a list node embedded inside the caller-owned struct…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H.

Affected products

Zephyrproject Zephyr — versions 4.4.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

vulnerabilities@zephyrproject.org (patch)
vulnerabilities@zephyrproject.org

Frequently asked questions

What is CVE-2026-10635?: CVE-2026-10635 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 6.3/10. Published 2026-06-16.
How severe is CVE-2026-10635?: Medium severity. CVSS v3 base score is 6.3 out of 10.