UBUNTU-CVE-2026-25556

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Source
https://ubuntu.com/security/CVE-2026-25556
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25556.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-25556
Upstream
Published
2026-02-06T17:16:00Z
Modified
2026-02-28T06:12:02.031052Z
Severity
  • 5.9 (Medium) CVSS_V4 - 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 CVSS Calculator
  • 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

MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fzfillpixmapfromdisplaylist() when an exception occurs during display list rendering. The function accepts a caller-owned fzpixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fzdecodebarcodefromdisplay_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.

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/2026/UBUNTU-CVE-2026-25556.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/2026/UBUNTU-CVE-2026-25556.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/2026/UBUNTU-CVE-2026-25556.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/2026/UBUNTU-CVE-2026-25556.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/2026/UBUNTU-CVE-2026-25556.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/2026/UBUNTU-CVE-2026-25556.json"