{"id":"CVE-2026-104112","revision":"7186fffc4dd54525a92cb46d6e349eab","records":[{"revision":"7186fffc4dd54525a92cb46d6e349eab","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104112","aliases":[],"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. 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.","state":0,"publishedAt":"2026-10-09T14:19:29.399+00:00","modifiedAt":"2026-10-09T16:45:36.172+00:00","affected":[{"ecosystem":"https://illumos.org","name":"SUNWcs","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"illumos\",\n                    \"product\": \"illumos-gate\",\n                    \"platforms\": [\n                        \"x86\"\n                    ],\n                    \"collectionURL\": \"https://illumos.org\",\n                    \"packageName\": \"SUNWcs\",\n                    \"repo\": \"https://github.com/illumos/illumos-gate\",\n                    \"programFiles\": [\n                        \"usr/src/cmd/nscd/nscd_frontend.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"cb5caa98562cf06753163f558cbcfe30b8f4673a\",\n                            \"lessThan\": \"af810a72c09944e884ec695e8dbf1702a4f424ae\",\n                            \"changes\": [\n                                {\n                                    \"at\": \"af810a72c09944e884ec695e8dbf1702a4f424ae\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"versionType\": \"git\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"Vendor product","name":"OmniOS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OmniOS\",\n                    \"product\": \"OmniOS\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"any\",\n                            \"lessThan\": \"r151054\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"r151058\",\n                            \"lessThan\": \"r151058w\",\n                            \"changes\": [\n                                {\n                                    \"at\": \"r151058w\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"r151056\",\n                            \"lessThan\": \"r151056aw\",\n                            \"changes\": [\n                                {\n                                    \"at\": \"r151056aw\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"r151054\",\n                            \"lessThan\": \"r151054bw\",\n                            \"changes\": [\n                                {\n                                    \"at\": \"r151054bw\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"affected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P","score":6.8,"severity":"MEDIUM"}],"references":["https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers","https://illumos.org/issues/18494","https://github.com/illumos/illumos-gate/commit/af810a72c09944e884ec695e8dbf1702a4f424ae"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104112","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104112","identifiers":["CVE-2026-104112"]},"retained":false,"historicalAffected":[]}],"coverage":[]}