{"id":"CVE-2026-104114","state":"PUBLISHED","title":"NULL pointer dereference in illumos nwamd door handler allows local users to crash the daemon","description":"A NULL pointer dereference in the illumos Network Auto-Magic daemon (nwamd) allows a local user to crash the daemon. nwamd_door_switch() in usr/src/cmd/cmd-inet/lib/nwamd/door_if.c writes to the caller's request structure before checking that a request was supplied, and before checking the caller's credentials. Because the nwamd door at /etc/svc/volatile/nwam/nwam_door is accessible to all local users, an unprivileged user can issue a door_call() with no argument data to crash nwamd; repeated calls place the svc:/network/physical:nwam service into maintenance, stopping automatic network configuration. nwamd runs only when svc:/network/physical:nwam is enabled, which is not the default. The flaw has existed since 2010 (illumos-gate commit 6ba597c5), and affects any illumos distribution prior to illumos-gate commit 0f1064d9.","publishedAt":"2026-10-09T14:22:14.611Z","updatedAt":"2026-10-09T16:45:28.800Z","severity":{"score":5.4,"label":"Medium","version":"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:N/E:P","source":"illumos"},"assigner":"illumos","products":["illumos illumos-gate","OmniOS OmniOS"],"affected":[{"vendor":"illumos","product":"illumos-gate","packageName":"SUNWcs","defaultStatus":"unaffected","versions":[{"version":"6ba597c56d749c61b4f783157f63196d7b2445f0","status":"affected","lessThan":"0f1064d97f1a43778ddf87d4e438b99872aed1a0","changes":[{"at":"0f1064d97f1a43778ddf87d4e438b99872aed1a0","status":"unaffected"}],"versionType":"git"}],"platforms":["x86"],"collectionURL":"https://illumos.org","repo":"https://github.com/illumos/illumos-gate","programFiles":["usr/src/cmd/cmd-inet/lib/nwamd/door_if.c"]},{"vendor":"OmniOS","product":"OmniOS","defaultStatus":"affected","versions":[{"version":"any","status":"affected","lessThan":"r151054","versionType":"custom"},{"version":"r151058","status":"affected","lessThan":"r151058w","changes":[{"at":"r151058w","status":"unaffected"}],"versionType":"custom"},{"version":"r151056","status":"affected","lessThan":"r151056aw","changes":[{"at":"r151056aw","status":"unaffected"}],"versionType":"custom"},{"version":"r151054","status":"affected","lessThan":"r151054bw","changes":[{"at":"r151054bw","status":"unaffected"}],"versionType":"custom"}]}],"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/18495","https://github.com/illumos/illumos-gate/commit/0f1064d97f1a43778ddf87d4e438b99872aed1a0"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/104xxx/CVE-2026-104114.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104114","state":"PUBLISHED","datePublished":"2026-10-09T14:22:14.611Z","dateUpdated":"2026-10-09T16:45:28.800Z","assignerShortName":"illumos","assignerOrgId":"0ca53633-f0b5-4853-ba72-e0a2e62000d0","dateReserved":"2026-10-01T18:07:53.956Z"},"containers":{"cna":{"title":"NULL pointer dereference in illumos nwamd door handler allows local users to crash the daemon","descriptions":[{"lang":"en","value":"A NULL pointer dereference in the illumos Network Auto-Magic daemon (nwamd) allows a local user to crash the daemon. nwamd_door_switch() in usr/src/cmd/cmd-inet/lib/nwamd/door_if.c writes to the caller's request structure before checking that a request was supplied, and before checking the caller's credentials. Because the nwamd door at /etc/svc/volatile/nwam/nwam_door is accessible to all local users, an unprivileged user can issue a door_call() with no argument data to crash nwamd; repeated calls place the svc:/network/physical:nwam service into maintenance, stopping automatic network configuration. nwamd runs only when svc:/network/physical:nwam is enabled, which is not the default. The flaw has existed since 2010 (illumos-gate commit 6ba597c5), and affects any illumos distribution prior to illumos-gate commit 0f1064d9."}],"affected":[{"vendor":"illumos","product":"illumos-gate","packageName":"SUNWcs","defaultStatus":"unaffected","versions":[{"version":"6ba597c56d749c61b4f783157f63196d7b2445f0","status":"affected","lessThan":"0f1064d97f1a43778ddf87d4e438b99872aed1a0","changes":[{"at":"0f1064d97f1a43778ddf87d4e438b99872aed1a0","status":"unaffected"}],"versionType":"git"}],"platforms":["x86"],"collectionURL":"https://illumos.org","repo":"https://github.com/illumos/illumos-gate","programFiles":["usr/src/cmd/cmd-inet/lib/nwamd/door_if.c"]},{"vendor":"OmniOS","product":"OmniOS","defaultStatus":"affected","versions":[{"version":"any","status":"affected","lessThan":"r151054","versionType":"custom"},{"version":"r151058","status":"affected","lessThan":"r151058w","changes":[{"at":"r151058w","status":"unaffected"}],"versionType":"custom"},{"version":"r151056","status":"affected","lessThan":"r151056aw","changes":[{"at":"r151056aw","status":"unaffected"}],"versionType":"custom"},{"version":"r151054","status":"affected","lessThan":"r151054bw","changes":[{"at":"r151054bw","status":"unaffected"}],"versionType":"custom"}]}],"references":[{"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"]},{"url":"https://illumos.org/issues/18495","tags":["issue-tracking"]},{"url":"https://github.com/illumos/illumos-gate/commit/0f1064d97f1a43778ddf87d4e438b99872aed1a0","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476 NULL Pointer Dereference","type":"CWE"}]}],"providerMetadata":{"shortName":"illumos","orgId":"0ca53633-f0b5-4853-ba72-e0a2e62000d0","dateUpdated":"2026-10-09T14:22:14.611Z"},"workarounds":[{"lang":"en","value":"Systems that use the default svc:/network/physical:default service instead of svc:/network/physical:nwam do not run nwamd and are not exposed.","supportingMedia":[{"type":"text/html","base64":false,"value":"Systems that use the default svc:/network/physical:default service instead of svc:/network/physical:nwam do not run nwamd and are not exposed."}]}],"solutions":[{"lang":"en","value":"Update your illumos distribution to one that includes the fix for this issue.","supportingMedia":[{"type":"text/html","base64":false,"value":"Update your illumos distribution to one that includes the fix for this issue."}]}],"credits":[{"lang":"en","value":"Robert French","type":"finder"},{"lang":"en","value":"James Wynne III","type":"finder"},{"lang":"en","value":"Andy Fiddaman","type":"remediation developer"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"hand-authored"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-09T16:15:16.599352Z","id":"CVE-2026-104114","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":"2026-10-09T16:45:28.800Z"}}]}}}