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Vulnerability · Published Apr 22, 2026 · Assigned by canonical

CVE-2026-35351uutils coreutils mv Silent Ownership Loss in Cross-Device Operations

Medium 4.2

In plain English

A medium-severity security flaw in coreutils from Uutils. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

The mv utility in uutils coreutils fails to preserve file ownership during moves across different filesystem boundaries. The utility falls back to a copy-and-delete routine that creates the destination file using the caller's UID/GID rather than the source's metadata. This flaw breaks backups and migrations, causing files moved by a privileged user (e.g., root) to become root-owned unexpectedly, which can lead to information disclosure or restricted access for the intended owners.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rust-coreutilsno fix listedDEBIAN-CVE-2026-35351
Debian:13rust-coreutilsno fix listedDEBIAN-CVE-2026-35351
Debian:14rust-coreutils0.9.0-1DEBIAN-CVE-2026-35351
Ubuntu:24.04:LTSrust-coreutilsno fix listedUBUNTU-CVE-2026-35351
Ubuntu:25.10rust-coreutilsno fix listedUBUNTU-CVE-2026-35351
Ubuntu:26.04:LTSrust-coreutilsno fix listedUBUNTU-CVE-2026-35351
Ubuntu:26.10rust-coreutilsno fix listedUBUNTU-CVE-2026-35351

Affected products (as reported)

VendorProductVersions
Uutils coreutils see references

Weakness: CWE-281 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

References