Medium

UBUNTU-CVE-2026-84270

Type: advisorySource: OSV1 source record

A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than requested, this unrestricted length is passed directly to memcpy(). This causes the operation to read memory outside the intended boundaries. This allows an attacker who plugs in a malicious MTP device to cause a segmentation fault when a file is read and crash the gvfsd-mtp process, resulting in a denial of service.

Announced 1 Sept 2026Source revision 1

Original source ↗

UBUNTU-CVE-2026-84270

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-84270

gvfs

Source reference: /affected/0/package/name

Affected versions: 1.24.2-0ubuntu4
Source reference: /affected/0/versions
1.24.2-0ubuntu5
Source reference: /affected/0/versions
1.24.2-0ubuntu6
Source reference: /affected/0/versions
1.26.2-1ubuntu1
Source reference: /affected/0/versions
1.27.3-1ubuntu1
Source reference: /affected/0/versions
1.27.4-1ubuntu1
Source reference: /affected/0/versions
1.27.90-1ubuntu1
Source reference: /affected/0/versions
1.27.92-1ubuntu1
Source reference: /affected/0/versions
1.28.1-1ubuntu1
Source reference: /affected/0/versions
1.28.2-1ubuntu1~16.04.1
Source reference: /affected/0/versions
1.28.2-1ubuntu1~16.04.2
Source reference: /affected/0/versions
1.28.2-1ubuntu1~16.04.3
Source reference: /affected/0/versions
1.28.2-1ubuntu1~16.04.3+esm1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gvfs

Source reference: /affected/1/package/name

Affected versions: 1.34.1-1ubuntu1
Source reference: /affected/1/versions
1.34.1-1ubuntu3
Source reference: /affected/1/versions
1.34.1-1ubuntu4
Source reference: /affected/1/versions
1.34.1-2ubuntu2
Source reference: /affected/1/versions
1.35.91-1ubuntu1
Source reference: /affected/1/versions
1.35.91-1ubuntu2
Source reference: /affected/1/versions
1.36.0-1ubuntu1
Source reference: /affected/1/versions
1.36.1-0ubuntu1
Source reference: /affected/1/versions
1.36.1-0ubuntu1.1
Source reference: /affected/1/versions
1.36.1-0ubuntu1.2
Source reference: /affected/1/versions
1.36.1-0ubuntu1.3
Source reference: /affected/1/versions
1.36.1-0ubuntu1.3.2
Source reference: /affected/1/versions
1.36.1-0ubuntu1.3.3
Source reference: /affected/1/versions
1.36.1-0ubuntu1.3.3+esm1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gvfs

Source reference: /affected/2/package/name

Affected versions: 1.42.1-1ubuntu1
Source reference: /affected/2/versions
1.42.2-1ubuntu3
Source reference: /affected/2/versions
1.43.90-1ubuntu3
Source reference: /affected/2/versions
1.43.92-1ubuntu1
Source reference: /affected/2/versions
1.44.0-1ubuntu1
Source reference: /affected/2/versions
1.44.1-1ubuntu1
Source reference: /affected/2/versions
1.44.1-1ubuntu1.1
Source reference: /affected/2/versions
1.44.1-1ubuntu1.2
Source reference: /affected/2/versions
1.44.1-1ubuntu1.2+esm1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gvfs

Source reference: /affected/3/package/name

Affected versions: 1.47.91-1ubuntu1
Source reference: /affected/3/versions
1.48.1-2ubuntu2
Source reference: /affected/3/versions
1.48.1-2ubuntu3
Source reference: /affected/3/versions
1.48.1-2ubuntu5
Source reference: /affected/3/versions
1.48.1-3
Source reference: /affected/3/versions
1.48.1-4
Source reference: /affected/3/versions
1.48.2-0ubuntu1
Source reference: /affected/3/versions
1.48.2-0ubuntu1.1
Source reference: /affected/3/versions
1.48.2-0ubuntu1.2
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gvfs

Source reference: /affected/4/package/name

Affected versions: 1.52.0-1
Source reference: /affected/4/versions
1.52.1-1build1
Source reference: /affected/4/versions
1.52.2-1
Source reference: /affected/4/versions
1.53.90-2
Source reference: /affected/4/versions
1.54.0-1build1
Source reference: /affected/4/versions
1.54.0-1build2
Source reference: /affected/4/versions
1.54.0-1build3
Source reference: /affected/4/versions
1.54.0-1ubuntu2
Source reference: /affected/4/versions
1.54.4-0ubuntu1~24.04.1
Source reference: /affected/4/versions
1.54.4-0ubuntu1~24.04.2
Source reference: /affected/4/versions
1.54.4-0ubuntu1~24.04.4
Source reference: /affected/4/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gvfs

Source reference: /affected/5/package/name

Affected versions: 1.57.2-2ubuntu5
Source reference: /affected/5/versions
1.57.2-2ubuntu6
Source reference: /affected/5/versions
1.58.0-1ubuntu1
Source reference: /affected/5/versions
1.58.0-2
Source reference: /affected/5/versions
1.59.1-1
Source reference: /affected/5/versions
1.59.90-3
Source reference: /affected/5/versions
1.60.0-1
Source reference: /affected/5/versions
1.60.0-1ubuntu0.1
Source reference: /affected/5/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
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    "package": {
      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=esm-infra-legacy%2Fxenial",
      "ecosystem": "Ubuntu:Pro:16.04:LTS"
    },
    "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",
      "1.28.2-1ubuntu1~16.04.3+esm1"
    ],
    "database_specific": {
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    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-bin",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.28.2-1ubuntu1~16.04.3+esm1"
        }
      ]
    }
  },
  {
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        "events": [
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      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=esm-infra%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "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",
      "1.36.1-0ubuntu1.3.3+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84270.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-bin",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.36.1-0ubuntu1.3.3+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=esm-infra%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "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",
      "1.44.1-1ubuntu1.2+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84270.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-bin",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.44.1-1ubuntu1.2+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "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",
      "1.48.2-0ubuntu1.2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84270.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.48.2-0ubuntu1.2"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.48.2-0ubuntu1.2"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.48.2-0ubuntu1.2"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.48.2-0ubuntu1.2"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.48.2-0ubuntu1.2"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.48.2-0ubuntu1.2"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
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          }
        ]
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    ],
    "package": {
      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=noble",
      "ecosystem": "Ubuntu:24.04:LTS"
    },
    "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",
      "1.54.4-0ubuntu1~24.04.4"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84270.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.54.4-0ubuntu1~24.04.4"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gvfs",
      "purl": "pkg:deb/ubuntu/gvfs?arch=source&distro=resolute",
      "ecosystem": "Ubuntu:26.04:LTS"
    },
    "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",
      "1.60.0-1ubuntu0.1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84270.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "gvfs",
          "binary_version": "1.60.0-1ubuntu0.1"
        },
        {
          "binary_name": "gvfs-backends",
          "binary_version": "1.60.0-1ubuntu0.1"
        },
        {
          "binary_name": "gvfs-common",
          "binary_version": "1.60.0-1ubuntu0.1"
        },
        {
          "binary_name": "gvfs-daemons",
          "binary_version": "1.60.0-1ubuntu0.1"
        },
        {
          "binary_name": "gvfs-fuse",
          "binary_version": "1.60.0-1ubuntu0.1"
        },
        {
          "binary_name": "gvfs-libs",
          "binary_version": "1.60.0-1ubuntu0.1"
        }
      ]
    }
  }
]

Related CVEs: CVE-2026-84270
Source reference: /upstream

Publisher severity

medium

Source reference: /severity/0/score

Event: #85974 · Revision 1
Added to Heist Feed: Tue, 27 Oct 2026 04:06:12 GMT
Publisher date: Tue, 01 Sep 2026 16:17:00 GMT

Read the original announcement