CVE-2025-6196 | THREATINT

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.

Reserved 2025-06-17 | Published 2025-06-17 | Updated 2025-06-17 | Assigner redhat

MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem types

Integer Overflow or Wraparound

Product status

Default status

affected

Timeline

2025-06-17:	Reported to Red Hat.
2025-06-17:	Made public.

Credits

Red Hat would like to thank Mohammad Hussam Alzeyyat - mhzcyber for reporting this issue.

References

access.redhat.com/security/cve/CVE-2025-6196 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2373117 (RHBZ#2373117) issue-tracking

gitlab.gnome.org/GNOME/libgepub/-/issues/18

cve.org (CVE-2025-6196)

nvd.nist.gov (CVE-2025-6196)

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