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gdk-pixbuf — security advisory

Type: advisorySources: OSVAdvisory ID: ALPINE-CVE-2021-20240

A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Products
gdk-pixbuf
Affected versions
Not specified
Fixed versions
2.40.0-r1, 2.40.0-r3
CVEs
CVE-2021-20240
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 22:02 UTC · Revision 1

Source evidence

ALPINE-CVE-2021-20240

core-osv · Original source

Published 28 May 2021, 11:15 UTC

A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

osv:ALPINE-CVE-2021-20240

gdk-pixbuf

Fixed versions: 2.40.0-r1

gdk-pixbuf

Fixed versions: 2.40.0-r3

Complete source record
{
  "id": "360bd58fadece8870d49a500e4018d2a404b2f642a2883b36a6ff21146cc403e",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2021-20240",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-CVE-2021-20240",
    "summary": "A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
    "evidence": "osv:ALPINE-CVE-2021-20240",
    "products": [
      {
        "name": {
          "value": "gdk-pixbuf",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.40.0-r1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gdk-pixbuf",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.40.0-r3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "ALPINE-CVE-2021-20240",
      "aliases": [
        "ALPINE-CVE-2021-20240"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.40.0-r1"
                }
              ]
            }
          ],
          "package": {
            "name": "gdk-pixbuf",
            "purl": "pkg:apk/alpine/gdk-pixbuf?arch=source",
            "ecosystem": "Alpine:v3.11"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20240.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.40.0-r3"
                }
              ]
            }
          ],
          "package": {
            "name": "gdk-pixbuf",
            "purl": "pkg:apk/alpine/gdk-pixbuf?arch=source",
            "ecosystem": "Alpine:v3.12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20240.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-23T17:17:56.142379443Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-20240"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2021-20240"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-20240",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 415283,
  "published_at": "2021-05-28T11:15:08.037+00:00"
}