mlxsw: Use size_mul() in call to struct_size()

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[ Upstream commit e22c6ea025 ]

If, for any reason, the open-coded arithmetic causes a wraparound, the
protection that `struct_size()` adds against potential integer overflows
is defeated. Fix this by hardening call to `struct_size()` with `size_mul()`.

Fixes: 2285ec872d ("mlxsw: spectrum_acl_bloom_filter: use struct_size() in kzalloc()")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-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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Gustavo A. R. Silva 2023-09-15 13:01:23 -06:00 • committed by Greg Kroah-Hartman

parent a764c22bbc

commit 65e65a8b2d

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_bloom_filter.c

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