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Advisory severityMedium5.5Red Hat Linux

Medium [CVE-2026-59677] Denial of Service via missing authorization in seunshares

This medium-severity Red Hat Linux advisory covers CVE-2026-59677 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-59677 Source published Source updated

VulniPulse record published Record updated

CVE-2026-59677
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

A Missing Authorization vulnerability in selinux policycoreutils seunshares allows a user that is running in unconfined context to kill e.g. root-owned processes running also in unconfined context This issue affects policycoreutils through 3.10. That can cause denial of service by killing critical processes.

A local low-privileged user running unconfined may kill other unconfined processes, including root-owned ones, causing denial of service. Default confined SELinux setups reduce the practical attack surface.

Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-266.

Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2026:44343.

Affected products named by the advisory: Red Hat package: policycoreutils.

Affected versions
  • 3.10

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

Fixed versions
  • policycoreutils-main-3.11-2.1.hum1
  • RHSA-2026:44343

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 12 days ago·verify at source

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