ZDI 2026-08-13

ZDI-26-574: Linux Kernel Net Scheduler Connection Tracking Race Condition Local Privilege Escalation Vulnerability

CVE-2026-46319

Machine-generated analysis · WAYSCloud LLM

The issue is a race condition in the Linux kernel net scheduler connection tracking code. It enables local privilege escalation.

Context

The Linux kernel net scheduler connection tracking subsystem is affected. It is a race condition that can be exploited for local privilege escalation. Exploitation requires the attacker to already have the ability to execute high-privileged code on the system.

Operator considerations

Check: Verify kernel version and configuration for the vulnerable net scheduler connection tracking component.

From Zero Day Initiative ↗

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 7.5. The following CVEs are assigned: CVE-2026-46319.

Read the full advisory on ZDI →

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