UBUNTU-CVE-2026-35355

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Source
https://ubuntu.com/security/CVE-2026-35355
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35355.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-35355
Upstream
  • CVE-2026-35355
Published
2026-04-22T17:16:00Z
Modified
2026-05-14T14:41:21.607123Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.

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_name": "rust-coreutils",
            "binary_version": "0.0.24-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35355.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_name": "rust-coreutils",
            "binary_version": "0.2.2-0ubuntu2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35355.json"