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[68.48.65.54]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-517fb61eaf4sm183849021cf.4.2026.06.17.20.00.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jun 2026 20:00:40 -0700 (PDT) From: Michael Bommarito To: Stefan Achatz , Jiri Kosina , Benjamin Tissoires Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] HID: roccat: bound device-supplied profile index Date: Wed, 17 Jun 2026 23:00:34 -0400 Message-ID: <20260618030036.1880139-1-michael.bommarito@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7bit The Roccat Kone driver uses an 8-bit value taken straight from a USB HID interrupt report as an index into a fixed 5-element profiles[] array, without any range check. A malicious or counterfeit device that claims the Roccat Kone VID/PID can send a "switch profile" report with an out-of-range value and make the driver read out of bounds; the same unbounded index is also reachable at probe time from a device-supplied startup_profile field. The read result is stored in actual_dpi and exposed to user space through the actual_dpi sysfs attribute. Michael Bommarito (2): HID: roccat: bound device-supplied profile index HID: roccat: add KUnit test for kone profile-index bounds drivers/hid/Kconfig | 9 +++++ drivers/hid/hid-roccat-kone.c | 65 +++++++++++++++++++++++++++++++++-- 2 files changed, 72 insertions(+), 2 deletions(-) -- 2.53.0