3.16.37-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Sven Eckelmann <sven@xxxxxxxxxxxxx> commit fd7dec25a18f495e50d2040398fd263836ff3b28 upstream. 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: 354136bcc3c4 ("batman-adv: fix kernel crash due to missing NULL checks") Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- net/batman-adv/translation-table.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -577,8 +577,11 @@ bool batadv_tt_local_add(struct net_devi /* increase the refcounter of the related vlan */ vlan = batadv_softif_vlan_get(bat_priv, vid); if (WARN(!vlan, "adding TT local entry %pM to non-existent VLAN %d", - addr, BATADV_PRINT_VID(vid))) + addr, BATADV_PRINT_VID(vid))) { + kfree(tt_local); + tt_local = NULL; goto out; + } batadv_dbg(BATADV_DBG_TT, bat_priv, "Creating new local tt entry: %pM (vid: %d, ttvn: %d)\n", -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html