CVE-2026-35362
uutils coreutils Missing TOCTOU Protection on Non-Linux Unix Platforms in Safe Traversal Module
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
uutils coreutils Missing TOCTOU Protection on Non-Linux Unix Platforms in Safe Traversal Module
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
CVE-2026-35362- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
EUVDEUVD-2026-25006
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
EUVD-2026-25006- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-ggc5-46rg-mr4v
Duplicate Advisory: uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-w6xc-g9qj-vp32. This link is maintained to preserve external references.
Original Description
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
GHSA-ggc5-46rg-mr4v- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w6xc-g9qj-vp32
uucore: safe_traversal TOCTOU protection only enabled on Linux
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
Zellic finding 3.59. Reported in the Zellic uutils coreutils Program Security Assessment (for Canonical, Jan 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242.
- Record
GHSA-w6xc-g9qj-vp32- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
NVD
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
CVE-2026-35362- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
OSV
uutils coreutils Missing TOCTOU Protection on Non-Linux Unix Platforms in Safe Traversal Module
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
CVE-2026-35362- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2026-35362
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
DEBIAN-CVE-2026-35362- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-ggc5-46rg-mr4v
Duplicate Advisory: uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-w6xc-g9qj-vp32. This link is maintained to preserve external references.
Original Description
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
GHSA-ggc5-46rg-mr4v- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
OSVGHSA-w6xc-g9qj-vp32
uucore: safe_traversal TOCTOU protection only enabled on Linux
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
Zellic finding 3.59. Reported in the Zellic uutils coreutils Program Security Assessment (for Canonical, Jan 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242.
- Record
GHSA-w6xc-g9qj-vp32- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-367
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-35362
The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.
- Record
UBUNTU-CVE-2026-35362- CVSS 3.1
- 3.6 Low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
uucorecrates.io |
before 0.6.0 | 0.6.0 |
rust-coreutilsDebian:12 |
All versions, plus listed versions 0.0.17-20.0.17-30.0.17-40.0.17-50.0.17-6 Show 39 moreShow less0.0.19-10.0.19-20.0.19-30.0.20-10.0.21-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-20.0.26-10.0.26-20.0.26-30.0.26-40.0.26-50.0.27-10.0.27-20.0.27-30.0.30-10.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-10.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3 |
None known |
rust-coreutilsDebian:13 |
All versions, plus listed versions 0.0.30-20.0.30-30.0.30-3~exp10.0.30-40.10.0-1 Show 14 moreShow less0.11.0-10.11.0-20.12.0-10.6.0-10.7.0-10.8.0-10.8.0-20.8.0-30.8.0-40.8.0-50.8.0-60.9.0-10.9.0-20.9.0-3 |
None known |
rust-coreutilsDebian:14 |
before 0.6.0-1, plus listed versions 0.0.30-20.0.30-30.0.30-3~exp10.0.30-4 |
0.6.0-1 |
rust-coreutilsUbuntu:24.04:LTS |
All versions, plus listed versions 0.0.20-10.0.22-10.0.23-10.0.23-20.0.23-30.0.24-10.0.24-2 |
None known |
rust-coreutilsUbuntu:25.10 |
All versions, plus listed versions 0.0.30-10.0.30-20.0.30-2ubuntu20.1.0-0ubuntu10.1.0+git20250711.2ba3a33-0ubuntu1 Show 11 moreShow less0.1.0+git20250711.2ba3a33-0ubuntu20.1.0+git20250711.2ba3a33-0ubuntu30.1.0+git20250711.2ba3a33-0ubuntu40.1.0+git20250801.cf79675-0ubuntu10.1.0+git20250813.4af2a84-0ubuntu20.1.0+git20250813.4af2a84-0ubuntu40.1.0+git20250813.4af2a84-0ubuntu60.1.0+git20250813.4af2a84-0ubuntu70.2.2-0ubuntu10.2.2-0ubuntu20.2.2-0ubuntu2.1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-35362 is a low vulnerability (CVSS 3.6) in Uutils Coreutils, published April 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in uucore 0.6.0.
References
github.com/uutils/coreutils/pull/9792
nvd.nist.gov/vuln/detail/CVE-2026-35362