OSV-2025-256 Global-buffer-overflow in QByteArray::QByteArray

Not scored Published

A global buffer overflow in the KDE archive library allows attackers to cause crashes or potentially execute code via malicious archives.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Not stated
Victim action needed
A user has to click or open something
Fix
None listed

What is OSV-2025-256?

OSV-2025-256 is a memory corruption vulnerability in kimageformats, published on 5 Apr 2025.

Official description

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=408025086

Crash type: Global-buffer-overflow READ 15
Crash state:
QByteArray::QByteArray
KZip::openArchive
KArchive::open

Which versions are affected by OSV-2025-256?

1 open source package ship an affected version, including kimageformats.

PackageAffectedFixed in
kimageformats OSS-FuzzAll versionsNone

How do I fix OSV-2025-256?

No fix has been published for OSV-2025-256 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is OSV-2025-256 being exploited?

There is no known exploitation of OSV-2025-256 in the wild and no public exploit code.

Sources

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