{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104115", "assignerOrgId": "0ca53633-f0b5-4853-ba72-e0a2e62000d0", "state": "PUBLISHED", "assignerShortName": "illumos", "dateReserved": "2026-10-01T18:07:53.956Z", "datePublished": "2026-10-09T14:24:52.028Z", "dateUpdated": "2026-10-09T14:24:52.028Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "0ca53633-f0b5-4853-ba72-e0a2e62000d0", "shortName": "illumos", "dateUpdated": "2026-10-09T14:24:52.028Z"}, "title": "Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow", "type": "CWE"}]}], "affected": [{"vendor": "illumos", "product": "illumos-gate", "platforms": ["x86"], "collectionURL": "https://illumos.org", "packageName": "service/file-system/nfs", "repo": "https://github.com/illumos/illumos-gate", "programFiles": ["usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c", "usr/src/cmd/fs.d/reparsed/reparsed.c"], "versions": [{"status": "affected", "version": "2f172c55ef76964744bc62b4500ece87f3089b4d", "lessThan": "6a2df4aa5381599179ab6afb3165db81960dee35", "changes": [{"at": "6a2df4aa5381599179ab6afb3165db81960dee35", "status": "unaffected"}], "versionType": "git"}], "defaultStatus": "unaffected"}, {"vendor": "OmniOS", "product": "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"}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller's credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller's credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa."}]}], "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/18496", "tags": ["issue-tracking"]}, {"url": "https://github.com/illumos/illumos-gate/commit/6a2df4aa5381599179ab6afb3165db81960dee35", "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"}}], "workarounds": [{"lang": "en", "value": "The svc:/system/filesystem/reparse service is disabled by default. Systems on which it has not been enabled are not exposed; on others, disabling it removes exposure at the cost of reparse point (NFS referral) resolution.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "The svc:/system/filesystem/reparse service is disabled by default. Systems on which it has not been enabled are not exposed; on others, disabling it removes exposure at the cost of reparse point (NFS referral) resolution."}]}], "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"}}}}

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