UBUNTU-CVE-2026-35376

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-35376
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35376.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-35376
Upstream
  • CVE-2026-35376
Published
2026-04-22T17:16:00Z
Modified
2026-05-14T14:41:46.514499Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via fts_accpath) rather than binding the traversal and label application to the specific directory state encountered during traversal. Because these operations are not anchored to file descriptors, a local attacker with write access to a directory tree can exploit timing-sensitive rename or symbolic link races to redirect a privileged recursive relabeling operation to unintended files or directories. This vulnerability breaks the hardening expectations for SELinux administration workflows and can lead to the unauthorized modification of security labels on sensitive system objects.

References

Affected packages

Ubuntu:24.04:LTS / rust-coreutils

Package

Name
rust-coreutils
Purl
pkg:deb/ubuntu/rust-coreutils@0.0.24-2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0.20-1
0.0.22-1
0.0.23-1
0.0.23-2
0.0.23-3
0.0.24-1
0.0.24-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.0.24-2",
            "binary_name": "rust-coreutils"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35376.json"

Ubuntu:25.10 / rust-coreutils

Package

Name
rust-coreutils
Purl
pkg:deb/ubuntu/rust-coreutils@0.2.2-0ubuntu2.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0.30-1
0.0.30-2
0.0.30-2ubuntu2
0.1.0-0ubuntu1
0.1.0+git20250711.2ba3a33-0ubuntu1
0.1.0+git20250711.2ba3a33-0ubuntu2
0.1.0+git20250711.2ba3a33-0ubuntu3
0.1.0+git20250711.2ba3a33-0ubuntu4
0.1.0+git20250801.cf79675-0ubuntu1
0.1.0+git20250813.4af2a84-0ubuntu2
0.1.0+git20250813.4af2a84-0ubuntu4
0.1.0+git20250813.4af2a84-0ubuntu6
0.1.0+git20250813.4af2a84-0ubuntu7
0.2.2-0ubuntu1
0.2.2-0ubuntu2
0.2.2-0ubuntu2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.2.2-0ubuntu2.1",
            "binary_name": "rust-coreutils"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35376.json"