CVE-2026-43391

kernel: nsfs: tighten permission checks for handle opening

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 8, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel's nsfs component. This vulnerability allows privileged services to potentially view the namespaces of other privileged services, leading to information disclosure. This could enable unauthorized access to sensitive data or configurations between isolated services.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-1220 · Insufficient Granularity of Access Control