PT-2026-33535 · Camelot Os · Sentry-Kernel

Published 2026-04-17 · Updated 2026-04-18 · CVE-2026-40337

Mitre

CVSS v3.1

5.1

Medium

AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H

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.

Fix

Weakness Enumeration

CWE-283

Related Identifiers

CVE-2026-40337

Affected Products

Sentry-Kernel

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40337 · Security Note
• https://github.com/camelot-os/sentry-kernel/pull/108 · Note
• https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081 · Note
• https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg · Note