UBUNTU-CVE-2025-55780

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Source
https://ubuntu.com/security/CVE-2025-55780
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-55780
Upstream
Published
2025-09-23T18:15:00Z
Modified
2026-01-20T18:50:17.706030Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A null pointer dereference occurs in the function breakwordforoverflowwrap() in MuPDF 1.26.4 when rendering a malformed EPUB document. Specifically, the function calls fzhtmlsplitflow() to split a FLOWWORD node, but does not check if node->next is valid before accessing node->next->overflow_wrap, resulting in a crash if the split fails or returns a partial node chain.

References

Affected packages

Ubuntu:25.10
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.25.1+ds1-7?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.25.1+ds1-5build2
1.25.1+ds1-6
1.25.1+ds1-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libmupdf-dev",
            "binary_version": "1.25.1+ds1-7"
        },
        {
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"
Ubuntu:Pro:16.04:LTS
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.7a-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.7-1
1.7a-1
1.7a-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libmupdf-dev",
            "binary_version": "1.7a-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mupdf",
            "binary_version": "1.7a-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mupdf-tools",
            "binary_version": "1.7a-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"
Ubuntu:Pro:18.04:LTS
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.12.0+ds1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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": "libmupdf-dev",
            "binary_version": "1.12.0+ds1-1ubuntu0.1~esm2"
        },
        {
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"
Ubuntu:Pro:20.04:LTS
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.16.1+ds1-1ubuntu1+esm2?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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": "libmupdf-dev",
            "binary_version": "1.16.1+ds1-1ubuntu1+esm2"
        },
        {
            "binary_name": "mupdf",
            "binary_version": "1.16.1+ds1-1ubuntu1+esm2"
        },
        {
            "binary_name": "mupdf-tools",
            "binary_version": "1.16.1+ds1-1ubuntu1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"
Ubuntu:Pro:22.04:LTS
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.19.0+ds1-2ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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": "libmupdf-dev",
            "binary_version": "1.19.0+ds1-2ubuntu0.1~esm1"
        },
        {
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"
Ubuntu:Pro:24.04:LTS
mupdf

Package

Name
mupdf
Purl
pkg:deb/ubuntu/mupdf@1.23.10+ds1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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": "libmupdf-dev",
            "binary_version": "1.23.10+ds1-1ubuntu0.1~esm1"
        },
        {
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55780.json"