[patch] cpqarray: info leak in ida_locked_ioctl()

From: Dan Carpenter
Date: Mon Jun 03 2013 - 05:25:40 EST


The pciinfo struct has a two byte hole after ->dev_fn so stack
information could be leaked to the user.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 639d26b..2b94403 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -1193,6 +1193,7 @@ out_passthru:
ida_pci_info_struct pciinfo;

if (!arg) return -EINVAL;
+ memset(&pciinfo, 0, sizeof(pciinfo));
pciinfo.bus = host->pci_dev->bus->number;
pciinfo.dev_fn = host->pci_dev->devfn;
pciinfo.board_id = host->board_id;
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