CVE-2026-56135 Memory corruption in n/a

High 7.4 Published 24 Aug 2026 Updated 28 Aug 2026

Heap-based buffer overflow in NTFS-3G allows attackers to execute arbitrary code with root privileges via a malicious NTFS image.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-56135?

CVE-2026-56135 is a high-severity memory corruption vulnerability in n/a, published on 24 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.

Weakness: CWE-122

Which versions are affected by CVE-2026-56135?

It affects 1 product.

Products include Tuxera Ntfs-3g.

How do I fix CVE-2026-56135?

Apply the vendor's patch.

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

Is CVE-2026-56135 being exploited?

There is no known exploitation of CVE-2026-56135 in the wild and no public exploit code.

Sources

Also known as AZL-97932, DEBIAN-CVE-2026-56135, GHSA-c9qg-fh4v-mq8r, UBUNTU-CVE-2026-56135.