Linux Kernel up to 6.19.5 HID input_mapping denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19.5. This affects the function input_mapping of the component HID. The manipulation results in denial of service. This vulnerability is known as CVE-2026-43140. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.19.5. Affected is the function input_mapping of the component HID. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-43140 since 05/01/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 321690 (SUSE SLES12 Security Update : kernel (SUSE-SU-2026:2450-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2/165912d4321c692321c02793068d30700b4e0f1a/f6a3860241fbb556fd72332fa31c5e787004413b/243e1165eb03aca97d87aafa9c3130593837a1c2/922bd3e498a4b8e445def6e6ffea2ad3682ad516/5bbe266272d86c0657e8253600f3d5b74fb7b2ae/36c83c1329dd881f290f7df2feadfb9a21775108/17abd396548035fbd6179ee1a431bd75d49676a7 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (321690) and CERT Bund (WID-SEC-2026-1405). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Oracle Linux
  • Microsoft Azure Linux
  • Open Source Linux Kernel

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 321690
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2026:2450-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.252/5.15.202/6.1.165/6.6.128/6.12.75/6.18.16/6.19.6
Patch: db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2/165912d4321c692321c02793068d30700b4e0f1a/f6a3860241fbb556fd72332fa31c5e787004413b/243e1165eb03aca97d87aafa9c3130593837a1c2/922bd3e498a4b8e445def6e6ffea2ad3682ad516/5bbe266272d86c0657e8253600f3d5b74fb7b2ae/36c83c1329dd881f290f7df2feadfb9a21775108/17abd396548035fbd6179ee1a431bd75d49676a7

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
06/22/2026 +47 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43140 (🔒)
GCVE (CVE): GCVE-0-2026-43140
GCVE (VulDB): GCVE-100-361440
CERT Bund: WID-SEC-2026-1405 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/06/2026 16:44
Updated: 06/22/2026 06:31
Changes: 05/06/2026 16:44 (59), 05/17/2026 11:32 (10), 05/18/2026 23:34 (7), 06/22/2026 06:31 (2)
Complete: 🔍
Cache ID: 216::103

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