CVE-2026-53300

Linux Foundation · Linux Kernel (enetc driver)

A use-after-free vulnerability exists in the Linux kernel enetc network driver related to improper DMA memory management.

Executive summary

A high-severity use-after-free vulnerability in the Linux kernel enetc driver may allow attackers to compromise system integrity or cause service outages.

Vulnerability

The issue involves a potential DMA use-after-free condition within the NTMP (Network Traffic Management Protocol) implementation of the enetc driver. This vulnerability is triggered by improper handling of memory objects, potentially allowing an authenticated attacker to trigger memory corruption.

Business impact

With a CVSS score of 7.8, this vulnerability presents a high risk to organizational infrastructure. If successfully exploited, it could lead to unauthorized memory access or persistent service disruption, impacting the reliability of network-facing critical systems.

Remediation

Immediate Action: Apply the latest kernel security patches provided by your Linux distribution maintainer to address the enetc driver flaw.

Proactive Monitoring: Review kernel logs for memory-related errors or recurring crashes associated with networking hardware.

Compensating Controls: Ensure that network interfaces are isolated via VLANs and that high-privilege services are restricted from direct hardware interaction where possible.

Exploitation status

Public Exploit Available: false

Analyst recommendation

The severity of use-after-free vulnerabilities in kernel space necessitates prompt action. Administrators should verify the patch status of their kernel versions and deploy updates as soon as they are made available by their vendor to mitigate the risk of exploitation.