{"schema":"threatline.record/2","record":{"id":"CVE-2026-104112","aliases":[],"summary":"Missing release of passed file descriptors in illumos nscd allows local users to exhaust kernel memory","details":"A missing release of resources in the illumos name service cache daemon (nscd) allows a local user to exhaust kernel memory. The nscd door server procedure, switcher() in usr/src/cmd/nscd/nscd_frontend.c, does not close file descriptors that are passed with a door call but not used by the request, and the main nscd door at /var/run/name_service_door accepts passed descriptors from any user in its zone. Because nscd also runs with an unlimited file descriptor limit, an unprivileged local user, including one in a non-global zone, can repeatedly pass a descriptor to its zone's nscd in a door_call() loop, causing the file descriptor table of nscd to grow without bound in kernel memory. This causes a denial of service of nscd and can render processes in all zones on the host unresponsive. The flaw has existed since 2006 (illumos-gate commit cb5caa98), and affects any illumos distribution prior to illumos-gate commit af810a72.","categories":["Unclassified"],"product":"illumos-gate","vendor":"illumos","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104112","source_modified_at":"2026-10-09T16:45:36.172Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"illumos-gate","vendor":"illumos","versions":[{"status":"affected","version":"cb5caa98562cf06753163f558cbcfe30b8f4673a","lessThan":"af810a72c09944e884ec695e8dbf1702a4f424ae","changes":[{"at":"af810a72c09944e884ec695e8dbf1702a4f424ae","status":"unaffected"}],"versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104112","source_modified_at":"2026-10-09T16:45:36.172Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"OmniOS","vendor":"OmniOS","versions":[{"status":"affected","version":"any","lessThan":"r151054","versionType":"custom"},{"status":"affected","version":"r151058","lessThan":"r151058w","changes":[{"at":"r151058w","status":"unaffected"}],"versionType":"custom"},{"status":"affected","version":"r151056","lessThan":"r151056aw","changes":[{"at":"r151056aw","status":"unaffected"}],"versionType":"custom"},{"status":"affected","version":"r151054","lessThan":"r151054bw","changes":[{"at":"r151054bw","status":"unaffected"}],"versionType":"custom"}],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00116,"percentile":0.01532,"score_date":"2026-10-23"},"published_at":"2026-10-09T14:19:29.399Z","modified_at":"2026-10-09T16:45:36.172Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104112","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-09T16:45:36.172Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104112","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers","tags":["mailing-list"]},{"source":"CVE List","url":"https://illumos.org/issues/18494","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/illumos/illumos-gate/commit/af810a72c09944e884ec695e8dbf1702a4f424ae","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-09T16:15:18.136992Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-09T16:45:36.172Z","content_hash":"aa04d95d74502d050c75362ccfe790321b78502e3c15439b57b61c0664633da3"}}