CVE-2026-78465

{
  "id": "CVE-2026-78465",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-24T17:18:20.810",
  "lastModified": "2026-11-05T00:17:28.957",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service."
    },
    {
      "lang": "es",
      "value": "Se encontró una falla en el plugin file-pcx en GIMP, que afecta solo a las compilaciones de 32 bits. Al procesar un archivo de imagen PCX, el plugin calcula los tamaños de asignación de memoria basándose en las dimensiones de la imagen y el número de planos de color. Si un archivo manipulado establece el número de planos en 4 junto con dimensiones suficientemente gryes, el cálculo excede el límite de entero de 32 bits y se desborda, lo que resulta en una asignación de búfer basada en montículo de tamaño insuficiente. Este problema de desbordamiento de entero resulta en un desbordamiento de búfer basado en montículo cuando el plugin escribe posteriormente datos de imagen en el búfer de tamaño insuficiente, causando corrupción de memoria, lo que podría conducir a la ejecución de código arbitrario o a una denegación de servicio."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "GNOME",
          "product": "GIMP",
          "defaultStatus": "affected",
          "collectionURL": "https://gitlab.gnome.org/GNOME/gimp",
          "packageName": "gimp"
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 6",
          "defaultStatus": "unknown",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "gimp",
          "cpes": [
            "cpe:/o:redhat:rhel_els:6"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 7",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "gimp",
          "cpes": [
            "cpe:/o:redhat:rhel_els:7"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "gimp:2.8/gimp",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "gimp",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9"
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-24T18:00:09.876826Z",
          "id": "CVE-2026-78465",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gimp:gimp:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "3.0.0",
              "versionEndIncluding": "3.2.4",
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  ],
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-78465",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2522057",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
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}