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Bluetooth: ecdh_helper - fix leak of private key

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tmp buffer contains the swapped private key. In case the setkey call
failed, the tmp buffer was freed without clearing the private key.

Zeroize the temporary buffer so we don't leak the private key.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Tudor Ambarus 2017-09-28 17:14:54 +03:00 committed by Marcel Holtmann
parent 3814baf3f2
commit 168ed65483
1 changed files with 1 additions and 1 deletions
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2
net/bluetooth/ecdh_helper.c
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@ -122,7 +122,7 @@ int compute_ecdh_secret(struct crypto_kpp *tfm, const u8 public_key[64],
free_req:
kpp_request_free(req);
free_tmp:
kfree(tmp);
kzfree(tmp);
return err;
}