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    batman-adv: Fix memory leak on tt add with invalid vlan · fd7dec25
    Sven Eckelmann 提交于
    The object tt_local is allocated with kmalloc and not initialized when the
    function batadv_tt_local_add checks for the vlan. But this function can
    only cleanup the object when the (not yet initialized) reference counter of
    the object is 1. This is unlikely and thus the object would leak when the
    vlan could not be found.
    
    Instead the uninitialized object tt_local has to be freed manually and the
    pointer has to set to NULL to avoid calling the function which would try to
    decrement the reference counter of the not existing object.
    
    CID: 1316518
    Fixes: 354136bc ("batman-adv: fix kernel crash due to missing NULL checks")
    Signed-off-by: NSven Eckelmann <sven@narfation.org>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    fd7dec25
translation-table.c 112.0 KB