• Thomas Egerer's avatar
    xfrm: Allow different selector family in temporary state · 8444cf71
    Thomas Egerer authored
    The family parameter xfrm_state_find is used to find a state matching a
    certain policy. This value is set to the template's family
    (encap_family) right before xfrm_state_find is called.
    The family parameter is however also used to construct a temporary state
    in xfrm_state_find itself which is wrong for inter-family scenarios
    because it produces a selector for the wrong family. Since this selector
    is included in the xfrm_user_acquire structure, user space programs
    misinterpret IPv6 addresses as IPv4 and vice versa.
    This patch splits up the original init_tempsel function into a part that
    initializes the selector respectively the props and id of the temporary
    state, to allow for differing ip address families whithin the state.
    Signed-off-by: default avatarThomas Egerer <thomas.egerer@secunet.com>
    Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    8444cf71
xfrm4_state.c 2.22 KB