Bluetooth: Fix leak of uninitialized data to userspace

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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>

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Vegard Nossum 2008-11-30 12:17:19 +01:00 • committed by Marcel Holtmann

parent 7644d63d13

commit c6bf514c6e

1 changed files with 1 additions and 1 deletions

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net/bluetooth/hci_core.c

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