ZDI-26-700: Linux Kernel QFQ Plus Scheduler Use-After-Free Local Privilege Escalation Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

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 low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-22999.

Sources

• CVE.orgVulnerability recordCVE-2026-22999

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-22999

  30-day exploitation probability 0.2%

  first.org
• Zero Day InitiativeCoordinated disclosureZDI-26-700

  This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-22999.

  zerodayinitiative.com