CVE-2026-35358— uutils coreutils cp Semantic Loss and Potential Denial of Service with -R via Device Node Stream Reading
Quick assessment
Affected
Uutils coreutils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
uutils coreutils是Uutils开源的一个跨平台核心命令行工具集。 uutils coreutils存在安全漏洞，该漏洞源于递归复制时错误处理字符和块设备节点，可能导致运行时拒绝服务，如磁盘耗尽或进程挂起。
Possible ATT&CK Techniques 1 AI
T1074 · Data Staged
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I. Basic Information for CVE-2026-35358
Vulnerability Information
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Vulnerability Title
uutils coreutils cp Semantic Loss and Potential Denial of Service with -R via Device Node Stream Reading
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确的解析名称或索引
Source: CVE Program / CVE List V5
Vulnerability Title
uutils coreutils 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
uutils coreutils是Uutils开源的一个跨平台核心命令行工具集。 uutils coreutils存在安全漏洞，该漏洞源于递归复制时错误处理字符和块设备节点，可能导致运行时拒绝服务，如磁盘耗尽或进程挂起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-35358
| # | POC Description | Source Link | Shenlong Link |
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Same Patch Batch · Uutils · 2026-04-22 · 44 CVEs total
| CVE-2026-35338 | 7.3 HIGH | uutils coreutils chmod Path Traversal Bypass of --preserve-root |
| CVE-2026-35368 | 7.2 HIGH | uutils coreutils chroot Local Privilege Escalation and chroot Escape in via Name Service S |
| CVE-2026-35341 | 7.1 HIGH | uutils coreutils mkfifo Unauthorized Permission Change on Existing Files |
| CVE-2026-35352 | 7.0 HIGH | uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition |
| CVE-2026-35349 | 6.7 MEDIUM | uutils coreutils Path-Based Safety Bypass with --preserve-root |
| CVE-2026-35365 | 6.6 MEDIUM | uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion |
| CVE-2026-35350 | 6.6 MEDIUM | uutils coreutils cp Unexpected Privileged Executable Creation with -p |
| CVE-2026-35356 | 6.3 MEDIUM | uutils coreutils install Arbitrary File Overwrite with -D via Path Component Symlink Race |
| CVE-2026-35364 | 6.3 MEDIUM | uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition |
| CVE-2026-35360 | 6.3 MEDIUM | uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition |
| CVE-2026-35355 | 6.3 MEDIUM | uutils coreutils install Arbitrary File Overwrite via Symlink TOCTOU Race |
| CVE-2026-35374 | 6.3 MEDIUM | uutils coreutils split Arbitrary File Truncation via Time-of-Check to Time-of-Use (TOCTOU) |
| CVE-2026-35363 | 5.6 MEDIUM | uutils coreutils rm Safeguard Bypass via Improper Path Normalization |
| CVE-2026-35339 | 5.5 MEDIUM | uutils coreutils chmod False Success Exit Code in Recursive Mode |
| CVE-2026-35348 | 5.5 MEDIUM | uutils coreutils sort Local Denial of Service via Forced UTF-8 Parsing |
| CVE-2026-35369 | 5.5 MEDIUM | uutils coreutils kill System-wide Process Termination and Denial of Service via Argument M |
| CVE-2026-35340 | 5.5 MEDIUM | uutils coreutils chown and chgrp False Success Exit Code in Recursive Mode |
| CVE-2026-35380 | 5.5 MEDIUM | uutils coreutils cut Local Logic Error and Data Integrity Issue in Delimiter Parsing |
| CVE-2026-35345 | 5.3 MEDIUM | uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race |
| CVE-2026-35372 | 5.0 MEDIUM | uutils coreutils ln Security Bypass via Improper Handling of the --no-dereference Flag |
Showing top 20 of 44 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: coreutils
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CVE-2026-35381
uutils coreutils cut Local Logic Error and Data Integrity Is -
CVE-2026-35380
uutils coreutils cut Local Logic Error and Data Integrity Is
Same vendor: Uutils
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CVE-2026-93658
uutils coreutils 0.0.18 before 0.10.0 Privilege Escalation v -
CVE-2026-35381
uutils coreutils cut Local Logic Error and Data Integrity Is -
CVE-2026-35380
uutils coreutils cut Local Logic Error and Data Integrity Is -
CVE-2026-35379
uutils coreutils tr Local Logic Error and Data Integrity Iss -
CVE-2026-35378
uutils coreutils expr Local Denial of Service via Eager Eval
V. Comments for CVE-2026-35358
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