CVE-2026-89999

/// Technical description

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

HID: wacom: validate report length in wacom_intuos_pro2_bt_irq

wacom_intuos_pro2_bt_irq() receives the wire report length in `len`

but never consults it before parsing. After the report-id gate it

unconditionally calls wacom_intuos_pro2_bt_pen() and then, selected by

features.type, a fixed chain of sub-parsers, none of which receive

`len`:

wacom_intuos_pro2_bt_pen(wacom);

if (type == INTUOSP2_BT || type == INTUOSP2S_BT) {

wacom_intuos_pro2_bt_touch(wacom);

wacom_intuos_pro2_bt_pad(wacom);

wacom_intuos_pro2_bt_battery(wacom);

} else {

wacom_intuos_gen3_bt_pad(wacom);

wacom_intuos_gen3_bt_battery(wacom);

}

Each sub-parser dereferences wacom->data at fixed offsets. The furthest

byte touched on each branch is:

INTUOSP2_BT / INTUOSP2S_BT: wacom_intuos_pro2_bt_pad() reads data[285]

(the touchring byte), so the report must be at least 286 bytes;

INTUOSHT3_BT ("gen3"): wacom_intuos_gen3_bt_battery() rea

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References