SB2026052609 - Anolis OS update for lxc

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Main Vulnerability Database SB2026052609

SB2026052609 - Anolis OS update for lxc

Published: May 26, 2026

Security Bulletin ID SB2026052609
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Authorization (CVE-ID: CVE-2026-39402)

CWE-ID: CWE-285 - Improper Authorization

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper access control in lxc-user-nic delete authorization logic when deleting OVS-attached network interfaces. A local user can request deletion of another user's OVS port to cause a denial of service.

This is limited to multi-tenant environments using lxc-user-nic with OpenVswitch bridges, and exploitation requires a valid lxc-usernet policy entry on the same bridge.


Remediation

Install update from vendor's website.

References