Medium 5.1Published Apr 17, 2026

CVE-2026-40337Sentry kernel has incomplete ownership check for IRQ line manipulation

Updated under an hour ago (Oct 26, 2026, 4:10 AM ET)

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It affects camelot-os sentry-kernel. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for camelot-os sentry-kernel

Exploited in the last 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.

CVSS: 5.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
Weakness (CWE): CWE-283
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Apr 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

camelot-os sentry-kernel camelot_os:sentry_kernel (from the name)	before 0.4.7	CNA record

References

https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pgx-refsource-confirm
https://github.com/camelot-os/sentry-kernel/pull/108x-refsource-misc
https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.