CVE-2025-6196

Libgepub: integer overflow in libgepub's epub archive handling

State: Published
Severity: 5.5 Medium
Published: Jun 17, 2025
Updated: Nov 6, 2025
Reserved: Jun 17, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
libgepub	before 0.7.2Affected
Red Hat Enterprise Linux 7Red Hat

References

https://access.redhat.com/security/cve/CVE-2025-6196vdb-entry
RHBZ#2373117issue-tracking
https://gitlab.gnome.org/GNOME/libgepub/-/issues/18

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