[S390] zcrypt: add sanity check before copy_from_user()

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It's not obvious that copy_from_user() is called with a sane length
parameter here. Even though it currently seems to be correct better
add a check to prevent stack corruption / exploits.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2010-01-13 20:44:43 +01:00 • committed by Martin Schwidefsky

parent 94e587f61e

commit 0648f5659e

1 changed files with 3 additions and 1 deletions

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4

drivers/s390/crypto/zcrypt_api.c

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