CVE-2025-6196

EUVD-2025-18504

17.06.2025, 15:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	5.5 MEDIUM	LOCAL	LOW	NONE	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
redhat	CNA	5.5 MEDIUM	LOCAL	LOW	NONE	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 9%

Affected Products (NVD)

Vendor	Product	Version
gnome	libgepub	-

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

libgepub

bookworm	no-dsa
bullseye	postponed
forky	0.7.3-2 fixed
sid	0.7.3-2 fixed
trixie	0.7.3-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

libgepub

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	needs-triage
oracular	ignored
plucky	not-affected
questing	not-affected

Known Exploits!

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

Common Weakness Enumeration

CWE-190 - Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

References

https://access.redhat.com/security/cve/CVE-2025-6196

https://bugzilla.redhat.com/show_bug.cgi?id=2373117

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