[PATCH RESEND] cifs: use memzero_explicit to clear stack buffer

Steve French smfrench at gmail.com
Mon Jan 12 17:12:57 MST 2015

merged into cifs-2.6.git for-next

On Tue, Jan 6, 2015 at 4:59 PM, Herbert Xu <herbert at gondor.apana.org.au> wrote:
> On Tue, Jan 06, 2015 at 10:37:00PM +0100, Giel van Schijndel wrote:
>> When leaving a function use memzero_explicit instead of memset(0) to
>> clear stack allocated buffers. memset(0) may be optimized away.
>> This particular buffer is highly likely to contain sensitive data which
>> we shouldn't leak (it's named 'passwd' after all).
>> Signed-off-by: Giel van Schijndel <me at mortis.eu>
>> Reported-at: http://www.viva64.com/en/b/0299/
>> Reported-by: Andrey Karpov
>> Reported-by: Svyatoslav Razmyslov
> Acked-by: Herbert Xu <herbert at gondor.apana.org.au>
> Thanks,
> --
> Email: Herbert Xu <herbert at gondor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt



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