Re: [PATCH][next] ASoC: SOF: ipc4-topology: Use size_add() in call to struct_size()

On Fri, Sep 15, 2023 at 01:09:11PM -0600, Gustavo A. R. Silva wrote:

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_add()`.

Fixes: f9efae954905 ("ASoC: SOF: ipc4-topology: Add support for base config extension") Signed-off-by: Gustavo A. R. Silva gustavoars@kernel.org

Reviewed-by: Kees Cook keescook@chromium.org