CVE-2026-40337

MEDIUM

5.1

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.

CVE Details

CVSS v3.1 Score5.1

SeverityMEDIUM

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published4/18/2026

Last Modified4/18/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-283

References

https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081(security-advisories@github.com)

https://github.com/camelot-os/sentry-kernel/pull/108(security-advisories@github.com)

https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg(security-advisories@github.com)

IOC Correlations

No correlations recorded

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