{"id":"CVE-2026-40337","state":"PUBLISHED","title":"Sentry kernel has incomplete ownership check for IRQ line manipulation","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.","publishedAt":"2026-04-17T23:51:09.866Z","updatedAt":"2026-04-20T16:13:48.908Z","severity":{"score":5.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["camelot-os sentry-kernel"],"affected":[{"vendor":"camelot-os","product":"sentry-kernel","versions":[{"version":"< 0.4.7","status":"affected"}]}],"references":["https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg","https://github.com/camelot-os/sentry-kernel/pull/108","https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081"],"weaknesses":["CWE-283"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40337.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40337","state":"PUBLISHED","datePublished":"2026-04-17T23:51:09.866Z","dateUpdated":"2026-04-20T16:13:48.908Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-10T22:50:01.358Z"},"containers":{"cna":{"title":"Sentry kernel has incomplete ownership check for IRQ line manipulation","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"camelot-os","product":"sentry-kernel","versions":[{"version":"< 0.4.7","status":"affected"}]}],"references":[{"url":"https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg","name":"https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/camelot-os/sentry-kernel/pull/108","name":"https://github.com/camelot-os/sentry-kernel/pull/108","tags":["x_refsource_MISC"]},{"url":"https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081","name":"https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-283","lang":"en","description":"CWE-283: Unverified Ownership","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T23:51:09.866Z"},"source":{"advisory":"GHSA-5hgv-rg2f-79pg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-20T16:13:39.095832Z","id":"CVE-2026-40337","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T16:13:48.908Z"}}]}}}