CVE-2025-9408
High
Description
System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.
SeverityHigh
CVSS8.1
Exploit probability—
ProductZephyr
PublishedNov 11, 2025
First seenNov 11, 2025
Weakness typeCWE-270CWE-270
How to fix
Update
- zephyrproject-rtos Zephyr3.7.2, 4.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zephyrproject-rtos Zephyr | v < 3.7.2, 4.0.0 ≤ v < 4.2.2 | 3.7.2, 4.2.2 |
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