CVE-2026-89088
Parted: parted: denial of service via heap buffer overflow during fat16 resize
What happened?
A flaw was found in parted. A heap-based buffer overflow exists in libparted's file system resizing logic when handling FAT16 volumes. By convincing a user or administrator to resize a specially crafted FAT16 file system image with malformed directory metadata, an attacker can trigger an oversized read into a fixed-size memory buffer. This issue causes memory corruption, resulting in an application crash and a denial of service (DoS).
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| partedRed Hat | Default status: affected | See vendor advisory |
| partedRed Hat | Default status: unknown | See vendor advisory |
| partedRed Hat | Default status: affected | See vendor advisory |
| partedRed Hat | Default status: affected | See vendor advisory |
| partedRed Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.