Uutils coreutils up to 0.5.x Mknod Utility std::fs permissions

Summaryinfo

A vulnerability marked as critical has been reported in Uutils coreutils up to 0.5.x. The affected element is the function std::fs of the component Mknod Utility. Performing a manipulation results in permissions. This vulnerability was named CVE-2026-35361. The attack needs to be approached locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Uutils coreutils up to 0.5.x. This affects the function std::fs of the component Mknod Utility. The manipulation with an unknown input leads to a permissions vulnerability. CWE is classifying the issue as CWE-281. The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.

The weakness was presented by Zellic. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-35361 since 04/02/2026. The exploitability is told to be easy. An attack has to be approached locally. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1222 for this issue.

Upgrading to version 0.6.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25004). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Uutils

Name

• coreutils

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5

Website

• Product: https://github.com/uutils/coreutils/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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