CVE-2026-72399

Received Received - Intake

Buffer Overflow in Linux Kernel XDP Frame Handling

Publication date: 2026-08-15

Last updated on: 2026-08-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: net: enetc: check the number of BDs needed for xdp_frame The size of xdp_redirect_arr array is ENETC_MAX_SKB_FRAGS. However, the number of fragments contained in xdp_frame may be greater than or equal to ENETC_MAX_SKB_FRAGS, which will cause the access to xdp_redirect_arr to be out of bounds.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-15

Last Modified

2026-08-17

Generated

2026-09-04

AI Q&A

2026-08-15

EPSS Evaluated

2026-09-03

NVD

CVE-2026-72399

EUVD

EUVD-2026-59298

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's network driver enetc. It involves an out-of-bounds array access in the xdp_redirect_arr array, which has a fixed size of ENETC_MAX_SKB_FRAGS. The issue occurs when the number of fragments in an xdp_frame exceeds this size, leading to potential memory corruption or crashes.

Detection Guidance

This vulnerability involves an out-of-bounds access in the Linux kernel's ENETC driver when handling XDP frames. Detection requires checking kernel logs for related errors or crashes, particularly during high network traffic or XDP operations. Monitor for kernel oops messages or warnings about ENETC or XDP. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

If exploited, this vulnerability could cause system instability, crashes, or unauthorized memory access on affected Linux systems using the enetc network driver. Attackers might trigger denial-of-service conditions or escalate privileges.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a low-level kernel memory access issue without documented impact on data protection or privacy controls.

Mitigation Strategies

Apply the latest Linux kernel patches to address the out-of-bounds access in the enetc driver. Monitor network interfaces using tools like ethtool or tcpdump for unusual activity related to XDP frame handling.

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