CVE-2026-43140 Details
Description
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: Do not crash on missing msc->input Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, msc->input stays NULL, leading to a crash at a later time. Detect this condition in the input_configured() hook and reject the device. This is not supposed to happen with actual magic mouse devices, but can be provoked by imposing as a magic mouse USB device.
A vulnerability in the Linux kernel's handling of HID magic mouse devices can lead to a denial-of-service condition. Fake USB devices can send report descriptors that bypass the input_mapping() hook, leaving the associated input context NULL. This oversight can cause a crash when the system later attempts to process the input. The vulnerability has been addressed by modifying the input_configured() hook to detect and reject such devices before they cause a crash. While this issue is not expected to occur with genuine magic mouse devices, it can be artificially triggered by emulating a magic mouse USB device.
The vulnerability has been fixed in the Linux kernel. Users should upgrade to the latest version where this issue has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/165912d4321c692321c02793068d30700b4e0f1a | kernel.org | Patch |
| https://git.kernel.org/stable/c/17abd396548035fbd6179ee1a431bd75d49676a7 | kernel.org | Patch |
| https://git.kernel.org/stable/c/243e1165eb03aca97d87aafa9c3130593837a1c2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/36c83c1329dd881f290f7df2feadfb9a21775108 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5bbe266272d86c0657e8253600f3d5b74fb7b2ae | kernel.org | Patch |
| https://git.kernel.org/stable/c/922bd3e498a4b8e445def6e6ffea2ad3682ad516 | kernel.org | Patch |
| https://git.kernel.org/stable/c/db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f6a3860241fbb556fd72332fa31c5e787004413b | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.37, < 5.10.252 >= 5.11, < 5.15.202 >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 13, 2026 | Initial Analysis | [email protected] |
| May 6, 2026 | New CVE Received | kernel.org |