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CVE-2026-35349 — Vulnerability in uu_rm — CVE Details

MEDIUM

rm: --preserve-root bypassed via a symlink to / (string check instead of dev/inode)

Published July 6, 2026Updated July 6, 2026Source: osv

Summary

The `--preserve-root` check uses a path-string test (`path.has_root() && path.parent().is_none()`) rather than comparing device/inode. A symlink to `/` (e.g. `/tmp/rootlink -> /`) has a parent component, so it passes the check. GNU caches `/`'s dev/inode at startup and compares every traversed directory against it. **Impact:** `rm -rf --preserve-root` on a path that resolves through a symlink to `/` bypasses protection and can delete system directories. Recommendation: compare each entered directory's dev/inode against cached `/`. **Remediation:** Acknowledged by Canonical; fixed in commit 5e5968cd. --- _Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.44. Credit: Zellic._

Advisory Timeline

  • First published July 6, 2026 (98 days ago).
  • Last revised July 6, 2026 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update uu_rm to 0.7.0 or later
cargo update -p uu_rm --precise 0.7.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
uu_rm
crates.io
All versions0.7.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.7 score means for each attack dimension.

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-35349?
rm: --preserve-root bypassed via a symlink to / (string check instead of dev/inode) This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.7/10).
How do I check if my project is affected by CVE-2026-35349?
CVE-2026-35349 affects uu_rm. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-35349 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.7

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-7cr3-h577-g38j

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