CVE-2026-43136 HID: logitech-hidpp: Check maxfield in hidpp_get_report_length()

Medium 5.5 Published Updated

A malicious USB device can crash the Linux kernel by sending HID reports with no fields, causing a null dereference in the Logitech HID++ driver.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2026-43136?

CVE-2026-43136 is a medium-severity vulnerability in Linux kernel, published on 6 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Which versions are affected by CVE-2026-43136?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43136?

Apply the vendor's patch.

Is CVE-2026-43136 being exploited?

There is no known exploitation of CVE-2026-43136 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2026-43136, DEBIAN-CVE-2026-43136, GHSA-h8pw-w24f-rm6q, ROOT-OS-DEBIAN-11-CVE-2026-43136, ROOT-OS-UBUNTU-2204-CVE-2026-43136, ROOT-OS-UBUNTU-2404-CVE-2026-43136 and 1 more.

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