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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2018-05-03 17:30:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:25:05 +0200 |
| commit | 4798e96b7646d562f839b9a87332d86a5aa5bf10 (patch) | |
| tree | 1018a523b6e6b37d0e78d46bb7d1778eec27c8fd /Makefile | |
| parent | 0b19825ffa2838c7a3eaa83851dc19e8d5c527b3 (diff) | |
| download | linux-4798e96b7646d562f839b9a87332d86a5aa5bf10.tar.gz linux-4798e96b7646d562f839b9a87332d86a5aa5bf10.tar.bz2 linux-4798e96b7646d562f839b9a87332d86a5aa5bf10.zip | |
xhci: Fix use-after-free in xhci_free_virt_device
commit 44a182b9d17765514fa2b1cc911e4e65134eef93 upstream.
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: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions