CVE-2026-43047

Kernel memory corruption via mismatched HID report

Published May 1, 2026 · Updated May 1, 2026

Out-of-bounds write in the Linux Kernel HID multitouch driver allows local users to corrupt kernel memory through a crafted HID report. The feature-report response path fails to compare the returned report ID with the requested ID before passing the raw event into the HID core. Exploitation requires access to /dev/uhid or a malicious physical HID device and results in kernel memory corruption or a host crash.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux Kernel HID multitouch driver allows local users to corrupt kernel memory through a crafted HID report. The feature-report response path fails to compare the returned report ID with the requested ID before passing the raw event into the HID core. Exploitation requires access to /dev/uhid or a malicious physical HID device and results in kernel memory corruption or a host crash.

The record

CVE
CVE-2026-43047
Published
May 1, 2026
Updated
May 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2edc92f89eee328b5be5706b5d431bf90669e9c0
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <516da3f25cfe18643835af1cf09b0e9ffc36c383
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6a4acd3e86fe5584050c213d95147eba33856033
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <74c6015375d8b9bc1b1eb79f20636c8e894bcad7
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7f66fdbc077faed3b52519228d21d81979e92249
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a61163daf8a90b4a7ef154d5fc9c525f665734e3
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c7a27bb4d0f6573ca0f9c7ef0b63291486239190
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e716edafedad4952fe3a4a273d2e039a84e8681a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2edc92f89eee328b5be5706b5d431bf90669e9c0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <516da3f25cfe18643835af1cf09b0e9ffc36c383; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6a4acd3e86fe5584050c213d95147eba33856033; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <74c6015375d8b9bc1b1eb79f20636c8e894bcad7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7f66fdbc077faed3b52519228d21d81979e92249; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a61163daf8a90b4a7ef154d5fc9c525f665734e3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c7a27bb4d0f6573ca0f9c7ef0b63291486239190; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e716edafedad4952fe3a4a273d2e039a84e8681a

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7OracleCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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