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.
Metrics
CVSS 3.1 8.1/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 752038248808a7ff176bbdb668f19ae7d2a9816b, < 0bc4cf1a6ba00fb8c074531b179bc7b97502fbc4; >= 752038248808a7ff176bbdb668f19ae7d2a9816b, < 9c031b24aed6733b6dcc5d98527875b8654a04e9; >= 752038248808a7ff176bbdb668f19ae7d2a9816b, < 7812694752a5f295eaa05a093b90a2c332666051; >= 752038248808a7ff176bbdb668f19ae7d2a9816b, < 208f6d5b1dfd6399bc6af9e11f27f1f496243ed0; >= 752038248808a7ff176bbdb668f19ae7d2a9816b, < cac61b58a3b6340c52afa06bb15eac033158db2f |
| Linux | Linux | 6.2 |
References
- https://git.kernel.org/stable/c/0bc4cf1a6ba00fb8c074531b179bc7b97502fbc4Patch
- https://git.kernel.org/stable/c/208f6d5b1dfd6399bc6af9e11f27f1f496243ed0Patch
- https://git.kernel.org/stable/c/7812694752a5f295eaa05a093b90a2c332666051Patch
- https://git.kernel.org/stable/c/9c031b24aed6733b6dcc5d98527875b8654a04e9Patch
- https://git.kernel.org/stable/c/cac61b58a3b6340c52afa06bb15eac033158db2fPatch
Timeline
- Published
- May 28, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed