DEBIAN-CVE-2025-55780

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Source
https://security-tracker.debian.org/tracker/CVE-2025-55780
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55780.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-55780
Upstream
Published
2025-09-23T18:15:34.743Z
Modified
2026-03-17T02:50:31.765215Z
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
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

Debian:11 / mupdf

Package

Name
mupdf
Purl
pkg:deb/debian/mupdf?arch=source

Affected ranges

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

Affected versions

1.*
1.17.0+ds1-2
1.17.0+ds1-2+deb11u1
1.19.0+ds1-1
1.19.0+ds1-2
1.20.0+ds1-1
1.20.3+ds1-1
1.21.0+ds1-1
1.21.1+ds1-1
1.21.1+ds1-2
1.21.1+ds2-1
1.22.1+ds1-1
1.22.2+ds1-1
1.22.2+ds1-2
1.23.6+ds1-1
1.23.7+ds1-1
1.23.10+ds1-1
1.23.10+ds1-2
1.24.3+ds1-1
1.24.8+ds2-1
1.24.8+ds2-2
1.24.9+ds1-1
1.24.10+ds1-1
1.25.1+ds1-1
1.25.1+ds1-2
1.25.1+ds1-3
1.25.1+ds1-4
1.25.1+ds1-5
1.25.1+ds1-6
1.25.1+ds1-7
1.25.1+ds1-8
1.25.1+ds1-9
1.27.0+ds1-1
1.27.0+ds1-2
1.27.0+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55780.json"

Debian:12 / mupdf

Package

Name
mupdf
Purl
pkg:deb/debian/mupdf?arch=source

Affected ranges

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

Affected versions

1.*
1.21.1+ds2-1
1.22.1+ds1-1
1.22.2+ds1-1
1.22.2+ds1-2
1.23.6+ds1-1
1.23.7+ds1-1
1.23.10+ds1-1
1.23.10+ds1-2
1.24.3+ds1-1
1.24.8+ds2-1
1.24.8+ds2-2
1.24.9+ds1-1
1.24.10+ds1-1
1.25.1+ds1-1
1.25.1+ds1-2
1.25.1+ds1-3
1.25.1+ds1-4
1.25.1+ds1-5
1.25.1+ds1-6
1.25.1+ds1-7
1.25.1+ds1-8
1.25.1+ds1-9
1.27.0+ds1-1
1.27.0+ds1-2
1.27.0+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55780.json"

Debian:13 / mupdf

Package

Name
mupdf
Purl
pkg:deb/debian/mupdf?arch=source

Affected ranges

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

Affected versions

1.*
1.25.1+ds1-6
1.25.1+ds1-7
1.25.1+ds1-8
1.25.1+ds1-9
1.27.0+ds1-1
1.27.0+ds1-2
1.27.0+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55780.json"

Debian:14 / mupdf

Package

Name
mupdf
Purl
pkg:deb/debian/mupdf?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.27.0+ds1-2

Affected versions

1.*
1.25.1+ds1-6
1.25.1+ds1-7
1.25.1+ds1-8
1.25.1+ds1-9
1.27.0+ds1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55780.json"