The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). This behavior can lead to runtime denial of service through disk exhaustion or process hangs when reading from unbounded device nodes.
History

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

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). This behavior can lead to runtime denial of service through disk exhaustion or process hangs when reading from unbounded device nodes.
Title uutils coreutils cp Semantic Loss and Potential Denial of Service with -R via Device Node Stream Reading
Weaknesses CWE-706
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-22T17:56:03.840Z

Reserved: 2026-04-02T12:58:56.087Z

Link: CVE-2026-35358

cve-icon Vulnrichment

Updated: 2026-04-22T17:52:59.367Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-22T17:16:38.393

Modified: 2026-04-22T21:23:52.620

Link: CVE-2026-35358

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-22T18:15:15Z