# CVE-2026-35344: uutils coreutils has an Unchecked Return Value Issue

Source: https://junglewise.ai/threats/cve-2026-35344-uutils-coreutils-has-an-unchecked-return-value-issue  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-22  
License: CC BY 4.0 with a link back

CVE-2026-35344 · Severity: low · CVSS 3.3 · Published 2026-04-22

The dd utility in uutils coreutils suppresses errors during file truncation operations by unconditionally calling Result::ok() on truncation attempts. While intended to mimic GNU behavior for special files like /dev/null, the uutils implementation also hides failures on regular files and directories caused by full disks or read-only file systems. This can lead to silent data corruption in backup or migration scripts, as the utility may report a successful operation even when the destination file contains old or garbage data.

Technologies: [coreutils (crates.io)](https://junglewise.ai/threats/technologies/crates-io-coreutils), [Uutils Coreutils](https://junglewise.ai/threats/technologies/uutils-coreutils). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io), [Uutils](https://junglewise.ai/threats/vendors/uutils).

## Quick answers

**Is CVE-2026-35344 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-35344 being exploited in the wild.

**How severe is CVE-2026-35344?** Low severity, with a CVSS score of 3.3, published 22 April 2026.

**Which products and versions are affected?** coreutils (crates.io) SEMVER:introduced=0,last_affected=0.8.0.

**Is there a fix for CVE-2026-35344?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-35344?** Check whether you run coreutils (crates.io) or Uutils Coreutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- coreutils (crates.io) SEMVER:introduced=0,last_affected=0.8.0
- Uutils Coreutils

## Identifiers

- CVE-2026-35344
- GHSA-wh8p-h9hw-x2mc

## Related threats

- [uutils coreutils Incorrect Provision of Specified Functionality in cut](https://junglewise.ai/threats/cve-2026-35381-uutils-coreutils-incorrect-provision-of-specified-functionality)
- [uutils coreutils has an Improper Input Validation Issue in its cut Utility](https://junglewise.ai/threats/cve-2026-35380-uutils-coreutils-has-an-improper-input-validation-issue-in-its)
- [A logic error in the tr utility of uutils coreutils causes the program to incorrectly define the [:graph:] and [:print:] character classes.](https://junglewise.ai/threats/cve-2026-35379-uutils-coreutils-has-an-incorrect-provision-of-specified)
- [uutils coreutils has an Incorrect Short Circuit Evaluation Issue](https://junglewise.ai/threats/cve-2026-35378-uutils-coreutils-has-an-incorrect-short-circuit-evaluation-issue)
- [uutils coreutils has an Improper Input Validation Issue in its env Utility](https://junglewise.ai/threats/cve-2026-35377-uutils-coreutils-has-an-improper-input-validation-issue-in-its)