cpqarray: fix info leak in ida_locked_ioctl()

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

This was assigned CVE-2013-2147.

Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Mike Miller <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 639d26b90b9117a56c69f991663f603847cc206c..2b944038453681ef15ba61f41e1cfa3a9e885fbe 100644 (file)
--- 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;