trusted-keys: check for NULL before using it
TSS_rawhmac() checks for data != NULL before using it.
We should do the same thing for TSS_authhmac().
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/keys/trusted_defined.c b/security/keys/trusted_defined.c
index 7b21795..f7d0677 100644
--- a/security/keys/trusted_defined.c
+++ b/security/keys/trusted_defined.c
@@ -148,6 +148,11 @@
if (dlen == 0)
break;
data = va_arg(argp, unsigned char *);
+ if (!data) {
+ ret = -EINVAL;
+ va_end(argp);
+ goto out;
+ }
ret = crypto_shash_update(&sdesc->shash, data, dlen);
if (ret < 0) {
va_end(argp);