[lvc-project] [PATCH net 3/3] net: fealnx: allocate the card index from an IDA

[Andrew Lunn]

On Thu, Sep 24, 2026 at 10:44:25AM +0000, Жамбакиев Радий Рикардинович wrote:
> From: Radiy Zhambakiev <r.zhambakiev at prosoftsystems.ru>
> 
> card_idx is a static counter that is incremented on every probe.
> It can overflow and wrap to a negative value, which then indexes
> options[] and full_duplex[] out of bounds. Large values also no
> longer fit in the 12-byte boardname[] buffer.

Seems very theoretical. For something which is never going to happen,
please keep it KISS:

	if (card_idx > 100000) {
      		dev_error(..., "Please stop doing that!");
		return -ENODEV;
	 }

    Andrew

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