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| author | Mathias Nyman | 2018-05-03 16:30:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2018-05-03 17:55:32 +0200 |
| commit | 44a182b9d17765514fa2b1cc911e4e65134eef93 (patch) | |
| tree | 850a71ec84a35a4d6f7c56be0816b4e697d60edc /drivers/usb/core/config.c | |
| parent | usb: musb: trace: fix NULL pointer dereference in musb_g_tx() (diff) | |
| download | kernel-qcow2-linux-44a182b9d17765514fa2b1cc911e4e65134eef93.tar.gz kernel-qcow2-linux-44a182b9d17765514fa2b1cc911e4e65134eef93.tar.xz kernel-qcow2-linux-44a182b9d17765514fa2b1cc911e4e65134eef93.zip | |
xhci: Fix use-after-free in xhci_free_virt_device
KASAN found a use-after-free in xhci_free_virt_device+0x33b/0x38e
where xhci_free_virt_device() sets slot id to 0 if udev exists:
if (dev->udev && dev->udev->slot_id)
dev->udev->slot_id = 0;
dev->udev will be true even if udev is freed because dev->udev is
not set to NULL.
set dev->udev pointer to NULL in xhci_free_dev()
The original patch went to stable so this fix needs to be applied
there as well.
Fixes: a400efe455f7 ("xhci: zero usb device slot_id member when disabling and freeing a xhci slot")
Cc: <stable@vger.kernel.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/config.c')
0 files changed, 0 insertions, 0 deletions