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authorVasiliy Kulikov <segooon@gmail.com>2010-11-06 17:41:31 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2010-11-11 07:14:07 -0800
commiteca67aaeebd6e5d22b0d991af1dd0424dc703bfb (patch)
treed2feaad27048cf110f868f5e0d5a1884c9bd14d7
parent5dc92cf1d0b4b0debbd2e333b83f9746c103533d (diff)
downloadop-kernel-dev-eca67aaeebd6e5d22b0d991af1dd0424dc703bfb.zip
op-kernel-dev-eca67aaeebd6e5d22b0d991af1dd0424dc703bfb.tar.gz
usb: misc: iowarrior: fix information leak to userland
Structure iowarrior_info is copied to userland with padding byted between "serial" and "revision" fields uninitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Cc: stable <stable@kernel.org> Acked-by: Kees Cook <kees.cook@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/misc/iowarrior.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 3756641..c9078e4 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -553,6 +553,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
/* needed for power consumption */
struct usb_config_descriptor *cfg_descriptor = &dev->udev->actconfig->desc;
+ memset(&info, 0, sizeof(info));
/* directly from the descriptor */
info.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
info.product = dev->product_id;
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