{"id":"CVE-2026-40337","summary":"Sentry kernel has incomplete ownership check for IRQ line manipulation","details":"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.","aliases":["GHSA-5hgv-rg2f-79pg"],"modified":"2026-07-08T08:11:24.245783652Z","published":"2026-04-17T23:51:09.866Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40337.json","cwe_ids":["CWE-283"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40337.json"},{"type":"ADVISORY","url":"https://github.com/camelot-os/sentry-kernel/security/advisories/GHSA-5hgv-rg2f-79pg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40337"},{"type":"FIX","url":"https://github.com/camelot-os/sentry-kernel/commit/150b7edd2c5b0da0a8baeed3135ddde613b08081"},{"type":"FIX","url":"https://github.com/camelot-os/sentry-kernel/pull/108"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/camelot-os/sentry-kernel","events":[{"introduced":"0"},{"fixed":"150b7edd2c5b0da0a8baeed3135ddde613b08081"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"0.4.7"}]}}],"versions":["v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40337.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H"}]}