* [PATCH 2/2] block: cpqarray: fix information leak to userland
@ 2010-10-23 8:25 Vasiliy Kulikov
0 siblings, 0 replies; only message in thread
From: Vasiliy Kulikov @ 2010-10-23 8:25 UTC (permalink / raw)
To: kernel-janitors
Cc: Chirag Kantharia, Jens Axboe, Arnd Bergmann, Christoph Hellwig,
Kulikov Vasiliy, Andrew Morton, iss_storagedev, linux-kernel
Structure ida_pci_info_struct is copied to userland with some padding
fields unitialized. It leads to leaking of stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
---
drivers/block/cpqarray.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 946dad4..8e0e6b4 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -1198,6 +1198,7 @@ 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;
--
1.7.0.4
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2010-10-23 8:25 [PATCH 2/2] block: cpqarray: fix information leak to userland Vasiliy Kulikov
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