CVE-2026-63916

HID: wacom: Fix OOB write in wacom_hid_set_device_mode()

State: Published
Severity: 8.8 High
Published: Jul 19, 2026
Updated: Oct 19, 2026
Reserved: Jul 19, 2026

Description

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

HID: wacom: Fix OOB write in wacom_hid_set_device_mode()

wacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE usage is always located in the first field (field[0]) of the feature report. However, a device can specify HID_DG_INPUTMODE in a different field.

If HID_DG_INPUTMODE is in a field other than the first one and the first field has a report_count smaller than the usage_index of HID_DG_INPUTMODE, this leads to an out-of-bounds write to r->field[0]->value.

Fix this by storing the field index of HID_DG_INPUTMODE in 'struct hid_data' during feature mapping. In wacom_hid_set_device_mode(), use this stored field index to access the correct field and add bounds checks to ensure both the field index and the value index are within valid ranges before writing.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
LinuxLinux	5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 2add311d99646c9d235b2c44f9c169ba30f5db3aAffected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccafAffected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 5716a293fb19d382ca2336e08fd28a619a5f3c25Affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before ed598de9f61582902406d352d99f2073d8e00298Affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 43e7c02d6090a82fd60d63491f6871aec906345eAffected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before b8338111e14183972359009c12d0dbd81d2e1e16Affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0Affected 5ae6e89f7409cb5d218bb728326eba9c650d9700 to before c0a8899e02ddebd51e2589835182c239c2e224aeAffected
LinuxLinux	3.18Affected before 3.18Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.93 through 6.12.Not affected 6.18.35 through 6.18.Not affected 7.0.12 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 2add311d99646c9d235b2c44f9c169ba30f5db3aAffected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccafAffected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 5716a293fb19d382ca2336e08fd28a619a5f3c25Affected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before ed598de9f61582902406d352d99f2073d8e00298Affected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 43e7c02d6090a82fd60d63491f6871aec906345eAffected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before b8338111e14183972359009c12d0dbd81d2e1e16Affected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0Affected
5ae6e89f7409cb5d218bb728326eba9c650d9700 to before c0a8899e02ddebd51e2589835182c239c2e224aeAffected

LinuxLinux

3.18Affected
before 3.18Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.93 through 6.12.*Not affected
6.18.35 through 6.18.*Not affected
7.0.12 through 7.0.*Not affected
7.1 and laterNot affected

References

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