s390/zcrypt: add copy_from_user length plausibility checks

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There have been identified some places in the zcrypt
device driver where copy_from_user() is called but the
length value is not explicitly checked.

So now some plausibility checks and comments have been
introduced there.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

...

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Harald Freudenberger 2018-06-27 09:50:43 +02:00 • committed by Martin Schwidefsky

parent ad82a928eb

commit 1fee96264a

2 changed files with 37 additions and 3 deletions

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20

drivers/s390/crypto/zcrypt_cca_key.h

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20

drivers/s390/crypto/zcrypt_msgtype6.c

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