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/openbmc/linux/net/bluetooth/
H A Dhci_core.cc6bf514c Sun Nov 30 05:17:19 CST 2008 Vegard Nossum <vegard.nossum@gmail.com> Bluetooth: Fix leak of uninitialized data to userspace

struct hci_dev_list_req {
__u16 dev_num;
struct hci_dev_req dev_req[0]; /* hci_dev_req structures */
};

sizeof(struct hci_dev_list_req) == 4, so the two bytes immediately
following "dev_num" will never be initialized. When this structure
is copied to userspace, these uninitialized bytes are leaked.

Fix by using kzalloc() instead of kmalloc(). Found using kmemcheck.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
c6bf514c Sun Nov 30 05:17:19 CST 2008 Vegard Nossum <vegard.nossum@gmail.com> Bluetooth: Fix leak of uninitialized data to userspace

struct hci_dev_list_req {
__u16 dev_num;
struct hci_dev_req dev_req[0]; /* hci_dev_req structures */
};

sizeof(struct hci_dev_list_req) == 4, so the two bytes immediately
following "dev_num" will never be initialized. When this structure
is copied to userspace, these uninitialized bytes are leaked.

Fix by using kzalloc() instead of kmalloc(). Found using kmemcheck.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>