CVE-2026-43047

HID: multitouch: Check to ensure report responses match the request

State: Published
Severity: 7.8 High
Published: May 1, 2026
Updated: Oct 19, 2026
Reserved: May 1, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

HID: multitouch: Check to ensure report responses match the request

It is possible for a malicious (or clumsy) device to respond to a specific report's feature request using a completely different report ID. This can cause confusion in the HID core resulting in nasty side-effects such as OOB writes.

Add a check to ensure that the report ID in the response, matches the one that was requested. If it doesn't, omit reporting the raw event and return early.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
LinuxLinux	6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 516da3f25cfe18643835af1cf09b0e9ffc36c383Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before a61163daf8a90b4a7ef154d5fc9c525f665734e3Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 74c6015375d8b9bc1b1eb79f20636c8e894bcad7Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before c7a27bb4d0f6573ca0f9c7ef0b63291486239190Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 6a4acd3e86fe5584050c213d95147eba33856033Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 7f66fdbc077faed3b52519228d21d81979e92249Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 2edc92f89eee328b5be5706b5d431bf90669e9c0Affected 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before e716edafedad4952fe3a4a273d2e039a84e8681aAffected fee906f035f0bd18ff12d84d58766c44a2ab0918Affected 4.3.6 to before 4.4Affected
LinuxLinux	4.4Affected before 4.4Not affected 5.10.253 through 5.10.Not affected 5.15.203 through 5.15.Not affected 6.1.168 through 6.1.Not affected 6.6.134 through 6.6.Not affected 6.12.81 through 6.12.Not affected 6.18.22 through 6.18.Not affected 6.19.12 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 516da3f25cfe18643835af1cf09b0e9ffc36c383Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before a61163daf8a90b4a7ef154d5fc9c525f665734e3Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 74c6015375d8b9bc1b1eb79f20636c8e894bcad7Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before c7a27bb4d0f6573ca0f9c7ef0b63291486239190Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 6a4acd3e86fe5584050c213d95147eba33856033Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 7f66fdbc077faed3b52519228d21d81979e92249Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before 2edc92f89eee328b5be5706b5d431bf90669e9c0Affected
6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095 to before e716edafedad4952fe3a4a273d2e039a84e8681aAffected
fee906f035f0bd18ff12d84d58766c44a2ab0918Affected
4.3.6 to before 4.4Affected

LinuxLinux

4.4Affected
before 4.4Not affected
5.10.253 through 5.10.*Not affected
5.15.203 through 5.15.*Not affected
6.1.168 through 6.1.*Not affected
6.6.134 through 6.6.*Not affected
6.12.81 through 6.12.*Not affected
6.18.22 through 6.18.*Not affected
6.19.12 through 6.19.*Not affected
7.0 and laterNot affected

References

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