CVE-2026-40337
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.1
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
- EPSS probability
- 0.15%
- CWE
- CWE-283
- Published
- 2026-04-17
- Last modified
- 2026-04-20
Affected products
- camelot-os sentry-kernel
Weakness type
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