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Ubuntu CVE-2025-6196

| EUVDEUVD-2025-18504 MEDIUM
Integer Overflow or Wraparound (CWE-190)
2025-06-17 secalert@redhat.com
Denial Of Service Integer Overflow Ubuntu Debian Libgepub Red Hat Suse
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
qualitative
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 14, 2026 - 22:15 euvd
EUVD-2025-18504
Analysis Generated
Mar 14, 2026 - 22:15 vuln.today
PoC Detected
Aug 12, 2025 - 12:48 vuln.today
Public exploit code
CVE Published
Jun 17, 2025 - 15:15 nvd
MEDIUM 5.5

DescriptionCVE.org

A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.

Analysis

A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.

Technical ContextAI

An integer overflow occurs when an arithmetic operation produces a value that exceeds the maximum (or minimum) size of the integer type used to store it. This vulnerability is classified as Integer Overflow or Wraparound (CWE-190).

RemediationAI

Use safe integer arithmetic libraries. Check for overflow conditions before operations. Use appropriately sized integer types.

Same weakness CWE-190 – Integer Overflow or Wraparound

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Vendor StatusVendor

Ubuntu

Priority: Medium
libgepub
Release Status Version
bionic needs-triage -
focal needs-triage -
jammy needs-triage -
noble needs-triage -
plucky not-affected 0.7.3-1
upstream released 0.7.3-1
oracular ignored end of life, was needs-triage
questing not-affected -

Debian

libgepub
Release Status Fixed Version Urgency
bullseye vulnerable 0.6.0-2 -
bookworm vulnerable 0.7.0-2 -
trixie fixed 0.7.3-1 -
forky, sid fixed 0.7.3-2 -
(unstable) fixed 0.7.3-1 -

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Module for Package Hub 15 SP6 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
openSUSE Leap 15.6 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
openSUSE Leap 15.6 Fixed

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CVE-2025-6196 vulnerability details – vuln.today
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