CVE-2026-46232: HID: playstation: Clamp num_touch_reports

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: HID: playstation: Clamp num_touch_reports A device would never lie about the number of touch reports would it? If it does the loop in dualshock4_parse_report will read off the end of the touch_reports array, up to about 2 KiB for the maximum number of 256 loop iteraions. The data that is read is emitted via evdev if the DS4_TOUCH_POINT_INACTIVE bit happens to be set. Protect against this by clamping the num_touch_reports value provided by the device to the maximum size of the touch_reports array.

Affected products

Linux kernel: from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32; from 6.19 before 7.0.9; 7.1-rc1, 7.1-rc2, 7.1-rc3 — fixed in 6.12.90, 6.18.32, 6.6.140, 7.0.9

How to fix

Upgrade to a fixed version: Linux kernel 6.12.90, 6.18.32, 6.6.140, 7.0.9. Check the vendor advisory for mitigations.

References

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