CVE-2026-35358

uutils coreutils cp Semantic Loss and Potential Denial of Service with -R via Device Node Stream Reading

Published Apr 22, 2026 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-67hp-f6hq-2h6g uutils coreutils Uses Incorrectly-Resolved Name or Reference
Github GHSA Github GHSA GHSA-8vrf-r662-2w2v cp: -R reads device nodes as streams, destroying device semantics
History
Type Values Removed Values Added
CPEs cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*
Type Values Removed Values Added
First Time appeared Uutils
Uutils coreutils
Vendors & Products Uutils
Uutils coreutils
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Apr 22, 2026, 5:56 PM
Reserved
Apr 2, 2026, 12:58 PM
Status
Analyzed
Published
Apr 22, 2026, 5:16 PM
Modified
Oct 26, 2026, 10:10 PM