CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of Wacom HID devices, specifically in the `wacom_hid_set_device_mode()` function, which can lead to an out-of-bounds write if the HID_DG_INPUTMODE usage is not located in the expected field. This flaw could allow an attacker to exploit the vulnerability to execute arbitrary code or cause a denial of service. Organizations using Linux systems with Wacom devices should prioritize patching this vulnerability to mitigate potential security risks.
Original NVD 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.