netVigilance Vulnerability intelligence since 2004
CVE-2015-3246 · netVigilance record NV26-0193

Red Hat Libuser Race Condition

past due

What to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA deadline 2026-09-09 · passed 1 day ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the /etc/passwd file to cause a denial of service or privilege escalation.

Who is affected

Red Hat Libuser. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 1 day ago

Sources