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Findings

CVE-2026-23413

ZDI-26-694: Linux Kernel Net Scheduler Clsact Qdisc Use-After-Free Local Privilege Escalation Vulnerability

Published Sep 14, 2026

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.2. The following CVEs are assigned: CVE-2026-23413.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 14, 2026 · Catalog

    Detected

    This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.2. The following CVEs are assigned: CVE-2026-23413.

Sources

  • CVE.orgCVE-2026-23413

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2026-23413

    30-day exploitation probability 0.1%

    first.org
  • Zero Day InitiativeZDI-26-694

    This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.2. The following CVEs are assigned: CVE-2026-23413.

    zerodayinitiative.com