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s390/pkey: fix memory leak within _copy_apqns_from_user()

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commit f9cac4fd8878929c6ebff0bd272317905d77c38a upstream.

Fixes: f2bbc96e7c ("s390/pkey: add CCA AES cipher key support")
Reported-by: Markus Elfring <Markus.Elfring@web.de>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heiko Carstens 2019-11-12 09:19:26 +01:00 • committed by Greg Kroah-Hartman
commit e8dea4ed48
1 changed files with 3 additions and 1 deletions
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4
drivers/s390/crypto/pkey_api.c
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@ -740,8 +740,10 @@ static void *_copy_apqns_from_user(void __user *uapqns, size_t nr_apqns)
kapqns = kmalloc(nbytes, GFP_KERNEL);
if (!kapqns)
return ERR_PTR(-ENOMEM);
if (copy_from_user(kapqns, uapqns, nbytes))
if (copy_from_user(kapqns, uapqns, nbytes)) {
kfree(kapqns);
return ERR_PTR(-EFAULT);
}
}
return kapqns;