Vulnerability-Lookup

GHSA-GWF6-7HWV-R7VQ

Vulnerability from github – Published: 2026-10-09 15:31 – Updated: 2026-10-09 15:31

Details

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.

Severity

5.4 (Medium)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-104115"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-09T15:17:07Z",
    "severity": "MODERATE"
  },
  "details": "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\u0027s 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.",
  "id": "GHSA-gwf6-7hwv-r7vq",
  "modified": "2026-10-09T15:31:32Z",
  "published": "2026-10-09T15:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104115"
    },
    {
      "type": "WEB",
      "url": "https://github.com/illumos/illumos-gate/commit/6a2df4aa5381599179ab6afb3165db81960dee35"
    },
    {
      "type": "WEB",
      "url": "https://illumos.org/issues/18496"
    },
    {
      "type": "WEB",
      "url": "https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-104115 (GCVE-0-2026-104115)

Vulnerability from cvelistv5 – Published: 2026-10-09 14:24 – Updated: 2026-10-09 14:24

Title

Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon

Summary

Severity

5.4 (Medium)


                        
                          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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

illumos CNA under the redhat root

CNA scorecard – unranked: 9 records in the last 180 days, 10 needed details

References

3 references

URL	Tags
https://illumos.topicbox.com/groups/developer/T3b…	mailing-list
https://illumos.org/issues/18496	issue-tracking
https://github.com/illumos/illumos-gate/commit/6a…	patch

Impacted products

2 products

Vendor	Product	Version
illumos	illumos-gate	Affected: 2f172c55ef76964744bc62b4500ece87f3089b4d , < 6a2df4aa5381599179ab6afb3165db81960dee35 (git)
OmniOS	OmniOS	Affected: any , < r151054 (custom) Affected: r151058 , < r151058w (custom) Affected: r151056 , < r151056aw (custom) Affected: r151054 , < r151054bw (custom)

Credits

Robert French James Wynne III Andy Fiddaman

Show details on NVD website

JSON

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{
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        {
          "collectionURL": "https://illumos.org",
          "defaultStatus": "unaffected",
          "packageName": "service/file-system/nfs",
          "platforms": [
            "x86"
          ],
          "product": "illumos-gate",
          "programFiles": [
            "usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c",
            "usr/src/cmd/fs.d/reparsed/reparsed.c"
          ],
          "repo": "https://github.com/illumos/illumos-gate",
          "vendor": "illumos",
          "versions": [
            {
              "changes": [
                {
                  "at": "6a2df4aa5381599179ab6afb3165db81960dee35",
                  "status": "unaffected"
                }
              ],
              "lessThan": "6a2df4aa5381599179ab6afb3165db81960dee35",
              "status": "affected",
              "version": "2f172c55ef76964744bc62b4500ece87f3089b4d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "OmniOS",
          "vendor": "OmniOS",
          "versions": [
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              "lessThan": "r151054",
              "status": "affected",
              "version": "any",
              "versionType": "custom"
            },
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              "changes": [
                {
                  "at": "r151058w",
                  "status": "unaffected"
                }
              ],
              "lessThan": "r151058w",
              "status": "affected",
              "version": "r151058",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "r151056aw",
                  "status": "unaffected"
                }
              ],
              "lessThan": "r151056aw",
              "status": "affected",
              "version": "r151056",
              "versionType": "custom"
            },
            {
              "changes": [
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                  "status": "unaffected"
                }
              ],
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              "versionType": "custom"
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          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Robert French"
        },
        {
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          "type": "finder",
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        },
        {
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          "type": "remediation developer",
          "value": "Andy Fiddaman"
        }
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            "subConfidentialityImpact": "NONE",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        },
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          "url": "https://illumos.org/issues/18496"
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        {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-GWF6-7HWV-R7VQ

CVE-2026-104115 (GCVE-0-2026-104115)

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