Re: [PATCH net v4 6/7] usbnet: ipheth: fix DPE OoB read

[Greg KH <gregkh@linuxfoundation.org>]

On Sun, Jan 05, 2025 at 02:01:20AM +0100, Foster Snowhill wrote:
> Fix an out-of-bounds DPE read, limit the number of processed DPEs to
> the amount that fits into the fixed-size NDP16 header.
> 
> Fixes: a2d274c62e44 ("usbnet: ipheth: add CDC NCM support")
> Signed-off-by: Foster Snowhill <forst@pen.gy>
> ---
> v4:
>     Split from "usbnet: ipheth: refactor NCM datagram loop, fix DPE OoB
>     read" in v3. This commit is responsible for addressing the potential
>     OoB read.
> v3: https://lore.kernel.org/netdev/20241123235432.821220-5-forst@pen.gy/
>     Split out from a monolithic patch in v2 as an atomic change.
> v2: https://lore.kernel.org/netdev/20240912211817.1707844-1-forst@pen.gy/
>     No code changes. Update commit message to further clarify that
>     `ipheth` is not and does not aim to be a complete or spec-compliant
>     CDC NCM implementation.
> v1: https://lore.kernel.org/netdev/20240907230108.978355-1-forst@pen.gy/
> ---
>  drivers/net/usb/ipheth.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)

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