Description
A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.
Published: 2026-04-22
Score: 3.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: Local Denial of Service
Action: Apply Patch
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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-xh5h-p8c5-4w4x uutils coreutils has an Improper Handling of Unicode Encoding Issue
History

Mon, 04 May 2026 20:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*

Mon, 27 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Uutils
Uutils coreutils
Vendors & Products Uutils
Uutils coreutils

Wed, 22 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Description A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.
Title uutils coreutils ln Local Denial of Service via Improper Handling of Non-UTF-8 Filenames
Weaknesses CWE-176
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}


Subscriptions

Uutils Coreutils
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-22T17:20:29.756Z

Reserved: 2026-04-02T12:58:56.088Z

Link: CVE-2026-35373

cve-icon Vulnrichment

Updated: 2026-04-22T17:20:19.459Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-22T17:16:41.997

Modified: 2026-05-04T20:01:25.930

Link: CVE-2026-35373

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-27T19:53:31Z

Weaknesses