CVE-2026-40337: Camelot-OS Sentry-Kernel

Medium severity, CVSS 5.1. EPSS: 0.2% chance of exploitation in the next 30 days.

The Sentry kernel is a high security level micro-kernel implementation made for high security embedded systems. A given task with one of the DEV or IO capability is able to interact with another task's IRQ line through the __sys_int_* syscall familly. Prior to version 0.4.7, this can lead to DoS and covert-channels between this task and the outer world. A patch is available in version 0.4.7. As a workaround, reduce tasks that have the DEV and IO capability to a single one.

Affected products

• Camelot-OS Sentry-Kernel: before 0.4.7 (fixed in 0.4.7)

Published 2026-04-18. Last modified 2026-06-17.