vsock/virtio: update credit only if socket is not closed
commit ce7536bc upstream. If the socket is closed or is being released, some resources used by virtio_transport_space_update() such as 'vsk->trans' may be released. To avoid a use after free bug we should only update the available credit when we are sure the socket is still open and we have the lock held. Fixes: 06a8fc78 ("VSOCK: Introduce virtio_vsock_common.ko") Signed-off-by:Stefano Garzarella <sgarzare@redhat.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/r/20210208144454.84438-1-sgarzare@redhat.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
ba3bcb35
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