# Critical Photon OS Security Update

## Summary
  
Advisory Id     : PHSA-2026-5.0-0929
  
Type            : Security
  
Severity        : ['Critical', 'Important']
  
Issue date      : 2026-07-24
  
Affected Release: 5.0

## Details
  
Updates of ['rubygem-concurrent-ruby'] packages of Photon OS have been released.
## Affected Packages

### Critical
  
rubygem-concurrent-ruby - ['[CVE-2026-54906](https://nvd.nist.gov/vuln/detail/CVE-2026-54906)']

### Important
  
rubygem-concurrent-ruby - ['[CVE-2026-54904](https://nvd.nist.gov/vuln/detail/CVE-2026-54904)']

## Solution
  
Update the affected packages (tdnf update package)

## Updated Packages Information
  
rubygem-concurrent-ruby-1.3.4-1.1.2.ph5.x86_64.rpm | size : 636K , sha256 : a7d3e7812cdf1be1a6dc82a9c071d95d93999f2ba0de60c96b5adbaf51ff2a9b , build time : Fri, 24 Jul 2026 17:48:07 UTC