Vulnerability-Lookup

UBUNTU-CVE-2026-84269 (CVE-2026-84269)

Vulnerability from osv_ubuntu – Published: 2026-09-01 16:17 – Updated: 2026-09-16 11:43 – Source website

Details

A flaw was found in the AFP backend in gvfs. When mounting a share, a malicious AFP server can cause the DSI read path to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the pre-sized reply buffer, causing the operation to access past the intended boundaries. This issue allows a malicious server to overflow a heap buffer and crash the gvfsd-afp process, resulting in a denial of service.

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-84269	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-84269	REPORT
	https://gitlab.gnome.org/GNOME/gvfs/-/issues/863	REPORT
	https://gitlab.gnome.org/GNOME/gvfs/-/merge_reque…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-bin",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.28.2-1ubuntu1~16.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.28.2-1ubuntu1~16.04.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.24.2-0ubuntu4",
        "1.24.2-0ubuntu5",
        "1.24.2-0ubuntu6",
        "1.26.2-1ubuntu1",
        "1.27.3-1ubuntu1",
        "1.27.4-1ubuntu1",
        "1.27.90-1ubuntu1",
        "1.27.92-1ubuntu1",
        "1.28.1-1ubuntu1",
        "1.28.2-1ubuntu1~16.04.1",
        "1.28.2-1ubuntu1~16.04.2",
        "1.28.2-1ubuntu1~16.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-bin",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.36.1-0ubuntu1.3.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.36.1-0ubuntu1.3.3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.34.1-1ubuntu1",
        "1.34.1-1ubuntu3",
        "1.34.1-1ubuntu4",
        "1.34.1-2ubuntu2",
        "1.35.91-1ubuntu1",
        "1.35.91-1ubuntu2",
        "1.36.0-1ubuntu1",
        "1.36.1-0ubuntu1",
        "1.36.1-0ubuntu1.1",
        "1.36.1-0ubuntu1.2",
        "1.36.1-0ubuntu1.3",
        "1.36.1-0ubuntu1.3.2",
        "1.36.1-0ubuntu1.3.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-bin",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.44.1-1ubuntu1.2"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.44.1-1ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.44.1-1ubuntu1.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.42.1-1ubuntu1",
        "1.42.2-1ubuntu3",
        "1.43.90-1ubuntu3",
        "1.43.92-1ubuntu1",
        "1.44.0-1ubuntu1",
        "1.44.1-1ubuntu1",
        "1.44.1-1ubuntu1.1",
        "1.44.1-1ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.48.2-0ubuntu1.1"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.48.2-0ubuntu1.1"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.48.2-0ubuntu1.1"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.48.2-0ubuntu1.1"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.48.2-0ubuntu1.1"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.48.2-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.48.2-0ubuntu1.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.47.91-1ubuntu1",
        "1.48.1-2ubuntu2",
        "1.48.1-2ubuntu3",
        "1.48.1-2ubuntu5",
        "1.48.1-3",
        "1.48.1-4",
        "1.48.2-0ubuntu1",
        "1.48.2-0ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.54.4-0ubuntu1~24.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.54.4-0ubuntu1~24.04.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.52.0-1",
        "1.52.1-1build1",
        "1.52.2-1",
        "1.53.90-2",
        "1.54.0-1build1",
        "1.54.0-1build2",
        "1.54.0-1build3",
        "1.54.0-1ubuntu2",
        "1.54.4-0ubuntu1~24.04.1",
        "1.54.4-0ubuntu1~24.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gvfs",
            "binary_version": "1.60.0-1"
          },
          {
            "binary_name": "gvfs-backends",
            "binary_version": "1.60.0-1"
          },
          {
            "binary_name": "gvfs-common",
            "binary_version": "1.60.0-1"
          },
          {
            "binary_name": "gvfs-daemons",
            "binary_version": "1.60.0-1"
          },
          {
            "binary_name": "gvfs-fuse",
            "binary_version": "1.60.0-1"
          },
          {
            "binary_name": "gvfs-libs",
            "binary_version": "1.60.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "gvfs",
        "purl": "pkg:deb/ubuntu/gvfs@1.60.0-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.57.2-2ubuntu5",
        "1.57.2-2ubuntu6",
        "1.58.0-1ubuntu1",
        "1.58.0-2",
        "1.59.1-1",
        "1.59.90-3",
        "1.60.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was found in the AFP backend in gvfs. When mounting a share, a malicious AFP server can cause the DSI read path to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the pre-sized reply buffer, causing the operation to access past the intended boundaries. This issue allows a malicious server to overflow a heap buffer and crash the gvfsd-afp process, resulting in a denial of service.",
  "id": "UBUNTU-CVE-2026-84269",
  "modified": "2026-09-16T11:43:10Z",
  "published": "2026-09-01T16:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-84269"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-84269"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/gvfs/-/issues/863"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/gvfs/-/merge_requests/340"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-84269"
  ]
}

CVE-2026-84269 (GCVE-0-2026-84269)

Vulnerability from cvelistv5 – Published: 2026-09-01 15:19 – Updated: 2026-09-04 02:04

Title

Gvfs: afp: heap-based buffer overflow in dsi read path

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 02:04 UTC

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-84269	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2526784	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/gvfs/-/issues/863

Impacted products

6 products

Vendor	Product	Version
GNOME	gvfs	Affected: 0 , < 1.60.2 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-08-03 00:00

Credits

Red Hat would like to thank Keith Linneman (LinnemanLabs) for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84269",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-04T02:04:25.301415Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-04T02:04:56.643Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gitlab.gnome.org/GNOME/gvfs/-/issues/863"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://gitlab.gnome.org/GNOME/gvfs",
          "defaultStatus": "unaffected",
          "packageName": "gvfs",
          "product": "gvfs",
          "vendor": "GNOME",
          "versions": [
            {
              "lessThan": "1.60.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "defaultStatus": "affected",
          "packageName": "gvfs",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unknown",
          "packageName": "gvfs",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "affected",
          "packageName": "gvfs",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "affected",
          "packageName": "gvfs",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "affected",
          "packageName": "gvfs",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Keith Linneman (LinnemanLabs) for reporting this issue."
        }
      ],
      "datePublic": "2026-08-03T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the AFP backend in gvfs. When mounting a share, a malicious AFP server can cause the DSI read path to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the pre-sized reply buffer, causing the operation to access past the intended boundaries. This issue allows a malicious server to overflow a heap buffer and crash the gvfsd-afp process, resulting in a denial of service."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-02T13:37:06.376Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-84269"
        },
        {
          "name": "RHBZ#2526784",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526784"
        },
        {
          "url": "https://gitlab.gnome.org/GNOME/gvfs/-/issues/863"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-01T12:27:36.962Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-08-03T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Gvfs: afp: heap-based buffer overflow in dsi read path",
      "workarounds": [
        {
          "lang": "en",
          "value": "To mitigate this vulnerability, do not connect to untrusted AFP servers."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-122: Heap-based Buffer Overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-84269",
    "datePublished": "2026-09-01T15:19:08.794Z",
    "dateReserved": "2026-09-01T14:05:54.145Z",
    "dateUpdated": "2026-09-04T02:04:56.643Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2026-84269 (CVE-2026-84269)

CVE-2026-84269 (GCVE-0-2026-84269)

Tags

Sightings

Nomenclature

Related by attack behaviour