Re: [PATCH] crypto: atmel-sha204a - clear RNG data from memory

[Herbert Xu]

On Wed, Jul 08, 2026 at 05:04:00PM +0200, Thorsten Blum wrote:
> In atmel_sha204a_rng_read(), use memzero_explicit() to clear the local
> stack variable cmd before it goes out of scope, since cmd.data may still
> hold the last 32 random bytes.
> 
> Since atmel_sha204a_rng_done() caches work_data in hwrng::priv, and its
> response data is later used as RNG entropy, use kfree_sensitive() to
> clear the cached data on transaction failure and device removal.
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
> ---
>  drivers/crypto/atmel-sha204a.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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