FKIE_CVE-2026-15390

Vulnerability from fkie_nvd - Published: 2026-09-29 10:17 - Updated: 2026-09-29 11:16
Severity
9.0 (Critical) - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Summary
Das U-Boot with CONFIG_IP_DEFRAG=y parameter fails to clear IP reassembly state after delivering a complete datagram. An attacker who can deliver fragmented IP traffic can execute arbitrary code by sending duplicated last-fragment IP packets. This issue was fixed in commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa in version 2026.07.
References
cvd@cert.plhttps://cert.pl/en/posts/2026/09/CVE-2026-15390
cvd@cert.plhttps://source.denx.de/u-boot/u-boot/-/commit/b1aec609bb5e0d08c25c888c91935287ab4ee5fa
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "__net_defragment()"
          ],
          "product": "Das U-Boot",
          "programFiles": [
            "net.c"
          ],
          "repo": "https://source.denx.de/u-boot/u-boot",
          "vendor": "DENX Software Engineering",
          "versions": [
            {
              "changes": [
                {
                  "at": "commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "2026.07",
              "status": "affected",
              "version": "2009.08",
              "versionType": "date"
            }
          ]
        }
      ],
      "source": "cvd@cert.pl"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Das U-Boot\u00a0with CONFIG_IP_DEFRAG=y parameter fails to clear IP reassembly state after delivering a complete datagram. An attacker\u00a0who can deliver fragmented IP traffic can\u00a0execute arbitrary code by sending duplicated last-fragment IP packets.\n\n\nThis issue was fixed in commit b1aec609bb5e0d08c25c888c91935287ab4ee5fa\u00a0in\u00a0version 2026.07."
    }
  ],
  "id": "CVE-2026-15390",
  "lastModified": "2026-09-29T11:16:42.610",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "ADJACENT",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cvd@cert.pl",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-15390",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-29T10:53:14.845353Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-29T10:17:11.237",
  "references": [
    {
      "source": "cvd@cert.pl",
      "url": "https://cert.pl/en/posts/2026/09/CVE-2026-15390"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://source.denx.de/u-boot/u-boot/-/commit/b1aec609bb5e0d08c25c888c91935287ab4ee5fa"
    }
  ],
  "sourceIdentifier": "cvd@cert.pl",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-459"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "cvd@cert.pl",
      "type": "Secondary"
    }
  ]
}



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