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staging: gdm724x: check for buffer overflow in gdm_lte_multi_sdu_pkt()
[ Upstream commit 4a36e16 ] There needs to be a check to verify that we don't read beyond the end of "buf". This function is called from do_rx(). The "buf" is the USB transfer_buffer and "len" is "urb->actual_length". Fixes: 61e1210 ("staging: gdm7240: adding LTE USB driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/YMcnl4zCwGWGDVMG@mwanda Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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