CVE-2026-35354: Rust coreutils · A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of
Affects rust-coreutilsSource GCVE Database
Not known to be exploited · CVSS 4.7 Medium.
Data as of 11 Nov 2026, 12:41 UTC
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSrust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10rust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSrust-coreutilspkg:deb/ubuntu/rust-coreutils?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, restrict local write access to directories where mv operations involving cross-device moves are performed to trusted users only.
Description
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the mv utility of rust-coreutils during cross-device moves. The issue arises from the extended attribute preservation logic performing multiple path-based system calls that each resolve the path anew, allowing a local attacker with write access to the directory to swap files between calls. This can cause the destination file to receive a mixed set of security extended attributes, such as SELinux labels or file capabilities. The vulnerability has a medium severity score of 4.7 and affects multiple specific versions of rust-coreutils.