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u-boot — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-46728

Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

Products
u-boot
Affected versions
2023.01+dfsg-2, 2023.01+dfsg-2+deb12u1, 2023.01+dfsg-2+deb12u2, 2025.01-3, 2025.01-3.1
Fixed versions
2023.01+dfsg-2+deb12u3, 2025.01-3+deb13u1, 2025.01-3.2
CVEs
CVE-2026-46728
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 17:48 UTC · Revision 2

Source evidence

DEBIAN-CVE-2026-46728

core-osv · Original source

Published 16 May 2026, 22:16 UTC

Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

osv:DEBIAN-CVE-2026-46728

u-boot

Fixed versions: 2023.01+dfsg-2+deb12u3

u-boot

Fixed versions: 2025.01-3+deb13u1

u-boot

Fixed versions: 2025.01-3.2

Complete source record
{
  "id": "95d51f971b738d0a3768758b1b76852660938669a49e91caba5ab159db5d8bbb",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-46728",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-46728",
    "summary": "Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.",
    "evidence": "osv:DEBIAN-CVE-2026-46728",
    "products": [
      {
        "name": {
          "value": "u-boot",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2023.01+dfsg-2+deb12u3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2023.01+dfsg-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2023.01+dfsg-2+deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2023.01+dfsg-2+deb12u2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "u-boot",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2025.01-3+deb13u1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2025.01-3",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "u-boot",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2025.01-3.2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2025.01-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2025.01-3.1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-46728",
      "aliases": [
        "DEBIAN-CVE-2026-46728"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2023.01+dfsg-2+deb12u3"
                }
              ]
            }
          ],
          "package": {
            "name": "u-boot",
            "purl": "pkg:deb/debian/u-boot?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2023.01+dfsg-2",
            "2023.01+dfsg-2+deb12u1",
            "2023.01+dfsg-2+deb12u2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46728.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2025.01-3+deb13u1"
                }
              ]
            }
          ],
          "package": {
            "name": "u-boot",
            "purl": "pkg:deb/debian/u-boot?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2025.01-3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46728.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2025.01-3.2"
                }
              ]
            }
          ],
          "package": {
            "name": "u-boot",
            "purl": "pkg:deb/debian/u-boot?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2025.01-3",
            "2025.01-3.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46728.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:37.052270582Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-46728"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-46728"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-46728",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461260,
  "published_at": "2026-05-16T22:16:13.317+00:00"
}