ubuntu-cve-2026-48715
Vulnerability from osv_ubuntu
Published
2026-06-19 20:16
Modified
2026-06-29 11:35
Summary
Details

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, print_ff() copies up to 2032 bytes from attacker-controlled packet data into a 16-byte struct in6_addr on the stack, overflowing by up to 2016 bytes. Note that the main radvd daemon is not affected by the vulnerability. Version 2.21 patches the issue.

Severity
7.7 (High)
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:1.9.1-1.1ubuntu2"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:1.9.1-1.1ubuntu2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.9.1-1.1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.11-1"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.11-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.11-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.16-3"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.16-3"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.16-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.16-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.17-2"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.17-2"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.17-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.17-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.18-3build2"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.18-3build2"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.18-3build2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.18-3build1",
        "1:2.18-3build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.19-1ubuntu1"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.19-1ubuntu1"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.19-1ubuntu1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.19-1",
        "1:2.19-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.20-1"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.20-1"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.20-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.20-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "radvd",
            "binary_version": "1:2.20-1build1"
          },
          {
            "binary_name": "radvdump",
            "binary_version": "1:2.20-1build1"
          }
        ],
        "priority_reason": "This is only a denial of service in the radvdump utility"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "radvd",
        "purl": "pkg:deb/ubuntu/radvd@1:2.20-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.20-1",
        "1:2.20-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the `radvdump` utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, `print_ff()` copies up to 2032 bytes from attacker-controlled packet data into a 16-byte `struct in6_addr` on the stack, overflowing by up to 2016 bytes. Note that the main `radvd` daemon is not affected by the vulnerability. Version 2.21 patches the issue.",
  "id": "UBUNTU-CVE-2026-48715",
  "modified": "2026-06-29T11:35:22Z",
  "published": "2026-06-19T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48715"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-48715"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-48715"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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