UBUNTU-CVE-2026-16461 (CVE-2026-16461)

Vulnerability from osv_ubuntu – Published: 2026-07-21 12:17 – Updated: 2026-07-29 07:53 – Source website
VLAI
Details

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

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
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "0.2.1-2ubuntu2.2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@0.2.1-2ubuntu2.2+esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.0-8.2ubuntu2",
        "0.2.1-2ubuntu1",
        "0.2.1-2ubuntu2.1",
        "0.2.1-2ubuntu2.2",
        "0.2.1-2ubuntu2.2+esm1",
        "0.2.1-2ubuntu2.2+esm2",
        "0.2.1-2ubuntu2.2+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "0.2.3-0.2ubuntu0.16.04.1+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@0.2.3-0.2ubuntu0.16.04.1+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.1-6ubuntu4",
        "0.2.3-0.2",
        "0.2.3-0.2ubuntu0.1",
        "0.2.3-0.2ubuntu0.16.04.1",
        "0.2.3-0.2ubuntu0.16.04.1+esm1",
        "0.2.3-0.2ubuntu0.16.04.1+esm2",
        "0.2.3-0.2ubuntu0.16.04.1+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "0.2.3-0.6ubuntu0.18.04.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@0.2.3-0.6ubuntu0.18.04.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3-0.6",
        "0.2.3-0.6ubuntu0.18.04.1",
        "0.2.3-0.6ubuntu0.18.04.2",
        "0.2.3-0.6ubuntu0.18.04.3",
        "0.2.3-0.6ubuntu0.18.04.4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "1.2.5-8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@1.2.5-8?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.5-6",
        "1.2.5-8"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "1.2.6-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@1.2.6-2build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.5-9build1",
        "1.2.6-2",
        "1.2.6-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "1.2.6-7ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@1.2.6-7ubuntu2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.6-6",
        "1.2.6-7",
        "1.2.6-7build1",
        "1.2.6-7ubuntu1",
        "1.2.6-7ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rpcbind",
            "binary_version": "1.2.7-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "rpcbind",
        "purl": "pkg:deb/ubuntu/rpcbind@1.2.7-1build2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.7-1build1",
        "1.2.7-1build2"
      ]
    }
  ],
  "aliases": [],
  "details": "A stack-based buffer overflow was found in rpcbind\u0027s rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.",
  "id": "UBUNTU-CVE-2026-16461",
  "modified": "2026-07-29T07:53:23Z",
  "published": "2026-07-21T12:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-16461"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-16461"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502719"
    }
  ],
  "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-2026-16461"
  ]
}



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