CVE-2026-35354— uutils coreutils mv Security Xattr TOCTOU Race in Cross-Device
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I. Basic Information for CVE-2026-35354
Vulnerability Information
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Vulnerability Title
uutils coreutils mv Security Xattr TOCTOU Race in Cross-Device
Source: NVD (National Vulnerability Database)
Vulnerability Description
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute (xattr) preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with write access to the directory can exploit this race to swap files between calls, causing the destination file to receive an inconsistent mix of security xattrs, such as SELinux labels or file capabilities.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: NVD (National Vulnerability Database)
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mv实用程序在跨设备移动期间存在检查时间到使用时间漏洞，扩展属性保留逻辑使用多个基于路径的系统调用，每个操作都执行新的路径到inode查找，具有目录写入权限的本地攻击者可利用此竞争在调用之间交换文件，导致目标文件接收不一致的安全扩展属性混合。
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-2026-35354
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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-2026-35348 | 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-2026-35339 | 5.5 MEDIUM | uutils coreutils chmod 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
- 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 - CVE-2026-35377
uutils coreutils env Local Denial of Service via Improper Ha
Same vendor: Uutils
- 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 - CVE-2026-35377
uutils coreutils env Local Denial of Service via Improper Ha
Same weakness: CWE-367
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