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.

Related CPE's


Weaknesses



CWE-706

CVSS impact metrics


CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

4.4 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-04-22T17:16:38.393Z

5 months ago

Last modified

2026-06-17T10:40:27.330Z

3 months ago