CVE-2026-40337

MediumCVSS 5.1/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.1/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Apr 18, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2026-40337: Medium severity, CVSS 5.1 | Vulnix