FKIE_CVE-2026-32836

Vulnerability from fkie_nvd - Published: 2026-03-17 20:16 - Updated: 2026-07-14 19:16
Severity
6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.
References
disclosure@vulncheck.comhttps://github.com/mackron/dr_libs/commit/4f5a4cd3b57564d969443c580c75857e039f100a
disclosure@vulncheck.comhttps://github.com/mackron/dr_libs/commit/663239a3d0460c33bd5b6e5166edcb404e3df676
disclosure@vulncheck.comhttps://github.com/mackron/dr_libs/commit/fefced4a64adfb1a68a2d31d882366e56096dee8
disclosure@vulncheck.comhttps://github.com/mackron/dr_libs/issues/298Exploit, Issue Tracking, Mitigation, Vendor Advisory
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/mackron-dr-libs-excessive-memory-allocation-in-picture-metadata-parsingThird Party Advisory
Impacted products
Vendor Product Version
mackron dr_libs *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "modules": [
            "dr_flac.h"
          ],
          "packageURL": "pkg:github/mackron/dr_libs",
          "product": "dr_libs dr_flac.h",
          "repo": "https://github.com/mackron/dr_libs/blob/master/dr_flac.h",
          "vendor": "mackron",
          "versions": [
            {
              "lessThanOrEqual": "0.13.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "fefced4a64adfb1a68a2d31d882366e56096dee8",
              "versionType": "git"
            },
            {
              "status": "unaffected",
              "version": "4f5a4cd3b57564d969443c580c75857e039f100a",
              "versionType": "git"
            },
            {
              "status": "unaffected",
              "version": "663239a3d0460c33bd5b6e5166edcb404e3df676",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mackron:dr_libs:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "24B8BF49-DCFF-4882-AA06-E6D9BBB5ECB8",
              "versionEndIncluding": "0.13.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "dr_libs\u00a0dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks."
    },
    {
      "lang": "es",
      "value": "La versi\u00f3n 0.13.3 y anteriores de dr_libs contienen una vulnerabilidad de asignaci\u00f3n de memoria incontrolada en drflac__read_and_decode_metadata() que permite a los atacantes activar una asignaci\u00f3n de memoria excesiva al proporcionar bloques de metadatos PICTURE manipulados. Los atacantes pueden explotar los campos mimeLength y descriptionLength controlados por el atacante para causar una denegaci\u00f3n de servicio a trav\u00e9s del agotamiento de la memoria al procesar flujos FLAC con devoluciones de llamada de metadatos."
    }
  ],
  "id": "CVE-2026-32836",
  "lastModified": "2026-07-14T19:16:56.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "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": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-32836",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-18T14:06:01.362458Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-17T20:16:14.000",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/mackron/dr_libs/commit/4f5a4cd3b57564d969443c580c75857e039f100a"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/mackron/dr_libs/commit/663239a3d0460c33bd5b6e5166edcb404e3df676"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/mackron/dr_libs/commit/fefced4a64adfb1a68a2d31d882366e56096dee8"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/mackron/dr_libs/issues/298"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/mackron-dr-libs-excessive-memory-allocation-in-picture-metadata-parsing"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}



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