CVE-2026-43136
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HID Report Descriptor Parsing Flaw in Linux Kernel

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: HID: logitech-hidpp: Check maxfield in hidpp_get_report_length() Do not crash when a report has no fields. Fake USB gadgets can send their own HID report descriptors and can define report structures without valid fields. This can be used to crash the kernel over USB.

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Meta Information

Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-07-06
AI Q&A
2026-05-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-43136
EUVD
EUVD-2026-27696

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
linux kernel *
linux linux_kernel *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability exists in the Linux kernel's HID (Human Interface Device) driver for Logitech devices, specifically in the function hidpp_get_report_length().

The issue arises because the kernel does not properly check the maximum field value (maxfield) when processing HID report descriptors. Fake USB gadgets can send crafted HID report descriptors that define report structures without valid fields.

As a result, the kernel may crash when it encounters a report with no fields, leading to a denial of service.

Impact Analysis

An attacker can exploit this vulnerability by connecting a malicious USB device that sends specially crafted HID report descriptors to the Linux system.

This can cause the kernel to crash, resulting in a denial of service condition where the system becomes unstable or unresponsive.

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