CVE-2026-89085 Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image
A local attacker can cause a heap-based buffer overflow in parted by providing a crafted FAT32 image, leading to denial of service or potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-89085?
CVE-2026-89085 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 16 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.
Weakness: CWE-787
Which versions are affected by CVE-2026-89085?
Linux distribution packages (1)
parted openSUSE:Tumbleweed | All versions | 3.8-1.1 |
How do I fix CVE-2026-89085?
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-2026-89085 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89085 exists.
Sources
Also known as DEBIAN-CVE-2026-89085, ECHO-fa66-f0a1-2977, GHSA-j946-9w8f-v6hg, UBUNTU-CVE-2026-89085, openSUSE-SU-2026:11924-1.