CVE-2026-46232

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux752038248808a7ff176bbdb668f19ae7d2a9816b < 0bc4cf1a6ba00fb8c074531b179bc7b97502fbc4affected
LinuxLinux752038248808a7ff176bbdb668f19ae7d2a9816b < 9c031b24aed6733b6dcc5d98527875b8654a04e9affected
LinuxLinux752038248808a7ff176bbdb668f19ae7d2a9816b < 7812694752a5f295eaa05a093b90a2c332666051affected
LinuxLinux752038248808a7ff176bbdb668f19ae7d2a9816b < 208f6d5b1dfd6399bc6af9e11f27f1f496243ed0affected
LinuxLinux752038248808a7ff176bbdb668f19ae7d2a9816b < cac61b58a3b6340c52afa06bb15eac033158db2faffected
LinuxLinux6.2affected
LinuxLinux0 < 6.2unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.90 <= 6.12.*unaffected
LinuxLinux6.18.32 <= 6.18.*unaffected
LinuxLinux7.0.9 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References