HID: bpf: prevent buffer overflow in hid_hw_request

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right now the returned value is considered to be always valid. However,
when playing with HID-BPF, the return value can be arbitrary big,
because it's the return value of dispatch_hid_bpf_raw_requests(), which
calls the struct_ops and we have no guarantees that the value makes
sense.

Fixes: 8bd0488b5e ("HID: bpf: add HID-BPF hooks for hid_hw_raw_requests")
Cc: stable@vger.kernel.org
Acked-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

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Benjamin Tissoires 2026-03-13 08:40:25 +01:00

parent 5d4c6c132e

commit 2b658c1c44

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drivers/hid/bpf/hid_bpf_dispatch.c

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