{"api_version":"1","generated_at":"2026-10-09T16:53:00+00:00","cve":"CVE-2026-104112","urls":{"html":"https://cve.report/CVE-2026-104112","api":"https://cve.report/api/cve/CVE-2026-104112.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-104112","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104112"},"summary":{"title":"Missing release of passed file descriptors in illumos nscd allows local users to exhaust kernel memory","description":"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. 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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.","Type":"Description","Title":"Missing release of passed file descriptors in illumos nscd allow"}]}}}