CVE-2023-53746

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> s390/vfio-ap: fix memory leak in vfio_ap device driver<br /> <br /> The device release callback function invoked to release the matrix device<br /> uses the dev_get_drvdata(device *dev) function to retrieve the<br /> pointer to the vfio_matrix_dev object in order to free its storage. The<br /> problem is, this object is not stored as drvdata with the device; since the<br /> kfree function will accept a NULL pointer, the memory for the<br /> vfio_matrix_dev object is never freed.<br /> <br /> Since the device being released is contained within the vfio_matrix_dev<br /> object, the container_of macro will be used to retrieve its pointer.