IB/hfi1: info leak in get_ctxt_info()

The cinfo struct has a hole after the last struct member so we need to zero it out. Otherwise we disclose some uninitialized stack data.

Dan Carpenter committed 11 years ago

Commit ebe6b2e1 parent 951842b1 file · +1 −0Browse files

Unified · Split

@@ -1181,6 +1181,7 @@ static int get_ctxt_info(struct file fp, void __user ubase, __u32 len) · 1180 unmodified lines
1181	struct hfi1_filedata *fd = fp->private_data;	1181	struct hfi1_filedata *fd = fp->private_data;
1182	int ret = 0;	1182	int ret = 0;
1183		1183
		1184	memset(&cinfo, 0, sizeof(cinfo));
1184	ret = hfi1_get_base_kinfo(uctxt, &cinfo);	1185	ret = hfi1_get_base_kinfo(uctxt, &cinfo);
1185	if (ret < 0)	1186	if (ret < 0)
1186	goto done;	1187	goto done;