diff mbox series

[5.5,38/80] s390/pkey: fix missing length of protected key on return

Message ID 20200218190436.045686429@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Feb. 18, 2020, 7:54 p.m. UTC 
From: Harald Freudenberger <freude@linux.ibm.com>

commit aab73d278d49c718b722ff5052e16c9cddf144d4 upstream.

The pkey ioctl call PKEY_SEC2PROTK updates a struct pkey_protkey
on return. The protected key is stored in, the protected key type
is stored in but the len information was not updated. This patch
now fixes this and so the len field gets an update to refrect
the actual size of the protected key value returned.

Fixes: efc598e6c8a9 ("s390/zcrypt: move cca misc functions to new code file")
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reported-by: Christian Rund <RUNDC@de.ibm.com>
Suggested-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/s390/crypto/pkey_api.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/s390/crypto/pkey_api.c
+++ b/drivers/s390/crypto/pkey_api.c
@@ -774,7 +774,7 @@  static long pkey_unlocked_ioctl(struct f
 			return -EFAULT;
 		rc = cca_sec2protkey(ksp.cardnr, ksp.domain,
 				     ksp.seckey.seckey, ksp.protkey.protkey,
-				     NULL, &ksp.protkey.type);
+				     &ksp.protkey.len, &ksp.protkey.type);
 		DEBUG_DBG("%s cca_sec2protkey()=%d\n", __func__, rc);
 		if (rc)
 			break;