Vulnerability-Lookup

ubuntu-cve-2026-25556

Vulnerability from osv_ubuntu

Published

2026-02-06 17:16

Modified

2026-05-20 15:26

Summary

Details

MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.

Severity

5.9 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-25556	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-25556	REPORT
	https://bugs.ghostscript.com/show_bug.cgi?id=709029	REPORT
	https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mup…	REPORT
	https://mupdf.com/	REPORT
	https://www.vulncheck.com/advisories/mupdf-barcod…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mupdf",
            "binary_version": "1.7a-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.7a-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.7a-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7-1",
        "1.7a-1",
        "1.7a-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mupdf",
            "binary_version": "1.12.0+ds1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.12.0+ds1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.12.0+ds1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.11+ds1-1.1",
        "1.11+ds1-2",
        "1.12.0+ds1-1",
        "1.12.0+ds1-1ubuntu0.1~esm1",
        "1.12.0+ds1-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mupdf",
            "binary_version": "1.16.1+ds1-1ubuntu1+esm2"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.16.1+ds1-1ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.16.1+ds1-1ubuntu1+esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.0+ds1-1",
        "1.16.1+ds1-1ubuntu1",
        "1.16.1+ds1-1ubuntu1+esm1",
        "1.16.1+ds1-1ubuntu1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mupdf",
            "binary_version": "1.19.0+ds1-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.19.0+ds1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.19.0+ds1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.17.0+ds1-2",
        "1.19.0+ds1-1",
        "1.19.0+ds1-1build1",
        "1.19.0+ds1-2",
        "1.19.0+ds1-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mupdf",
            "binary_version": "1.23.10+ds1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.23.10+ds1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.23.10+ds1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.22.2+ds1-2",
        "1.22.2+ds1-2build1",
        "1.23.6+ds1-1",
        "1.23.7+ds1-1",
        "1.23.10+ds1-1",
        "1.23.10+ds1-1build1",
        "1.23.10+ds1-1build2",
        "1.23.10+ds1-1build3",
        "1.23.10+ds1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmupdf25.1",
            "binary_version": "1.25.1+ds1-7"
          },
          {
            "binary_name": "mupdf",
            "binary_version": "1.25.1+ds1-7"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.25.1+ds1-7"
          },
          {
            "binary_name": "python3-mupdf",
            "binary_version": "1.25.1+ds1-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.25.1+ds1-7?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.25.1+ds1-5build2",
        "1.25.1+ds1-6",
        "1.25.1+ds1-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmupdf27.0",
            "binary_version": "1.27.0+ds1-3ubuntu2"
          },
          {
            "binary_name": "mupdf",
            "binary_version": "1.27.0+ds1-3ubuntu2"
          },
          {
            "binary_name": "mupdf-tools",
            "binary_version": "1.27.0+ds1-3ubuntu2"
          },
          {
            "binary_name": "python3-mupdf",
            "binary_version": "1.27.0+ds1-3ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "mupdf",
        "purl": "pkg:deb/ubuntu/mupdf@1.27.0+ds1-3ubuntu2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.25.1+ds1-7",
        "1.25.1+ds1-7build1",
        "1.25.1+ds1-7build2",
        "1.27.0+ds1-2ubuntu1",
        "1.27.0+ds1-3ubuntu1",
        "1.27.0+ds1-3ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.",
  "id": "UBUNTU-CVE-2026-25556",
  "modified": "2026-05-20T15:26:05Z",
  "published": "2026-02-06T17:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-25556"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-25556"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.ghostscript.com/show_bug.cgi?id=709029"
    },
    {
      "type": "REPORT",
      "url": "https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=d4743b6092d513321c23c6f7fe5cff87cde043c1"
    },
    {
      "type": "REPORT",
      "url": "https://mupdf.com/"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/mupdf-barcode-decoding-double-free"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-25556"
  ]
}

CVE-2026-25556 (GCVE-0-2026-25556)

Vulnerability from cvelistv5 – Published: 2026-02-06 16:11 – Updated: 2026-07-14 15:53

Title

MuPDF 1.23.0 through 1.27.0 Barcode Decoding Double Free

Summary

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-06 16:34 UTC

CWE

CWE-415 - Double Free

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://bugs.ghostscript.com/show_bug.cgi?id=709029	issue-tracking
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mup…	patch
https://mupdf.com/	product
https://www.vulncheck.com/advisories/mupdf-barcod…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Artifex Software	MuPDF	Affected: 1.23.0 , ≤ 1.27.0 (semver) cpe:2.3:a:artifex:mupdf::::::::

Credits

Pavel Kohout, Aisle Research (www.aisle.com)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25556",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-06T16:34:46.909949Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-06T16:35:11.989Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/ArtifexSoftware/mupdf",
          "product": "MuPDF",
          "repo": "https://github.com/ArtifexSoftware/mupdf",
          "vendor": "Artifex Software",
          "versions": [
            {
              "lessThanOrEqual": "1.27.0",
              "status": "affected",
              "version": "1.23.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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      "metrics": [
        {
          "cvssV4_0": {
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    "datePublished": "2026-02-06T16:11:59.926Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.