mlxsw: Verify the accessed index doesn't exceed the array length
[ Upstream commit 837ec05c ] There are few cases in which an array index queried from a fw register, is accessed without any validation that it doesn't exceed the array length. Add a proper length validation, so accessing memory past the end of an array will be forbidden. Signed-off-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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