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IB/hfi1: info leak in get_ctxt_info()

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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.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dan Carpenter 2015-09-16 09:42:25 +03:00 committed by Doug Ledford
parent 951842b054
commit ebe6b2e8bc
1 changed files with 1 additions and 0 deletions
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drivers/staging/rdma/hfi1/file_ops.c
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@ -1181,6 +1181,7 @@ static int get_ctxt_info(struct file *fp, void __user *ubase, __u32 len)
struct hfi1_filedata *fd = fp->private_data;
int ret = 0;
memset(&cinfo, 0, sizeof(cinfo));
ret = hfi1_get_base_kinfo(uctxt, &cinfo);
if (ret < 0)
goto done;