net: fix infoleak in rtnetlink
[ Upstream commit 5f8e44741f
]
The stack object “map” has a total size of 32 bytes. Its last 4
bytes are padding generated by compiler. These padding bytes are
not initialized and sent out via “nla_put”.
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
wifi-calibration
parent
5923f46563
commit
9a9390bcf5
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@ -1072,14 +1072,16 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
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goto nla_put_failure;
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if (1) {
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struct rtnl_link_ifmap map = {
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.mem_start = dev->mem_start,
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.mem_end = dev->mem_end,
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.base_addr = dev->base_addr,
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.irq = dev->irq,
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.dma = dev->dma,
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.port = dev->if_port,
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};
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struct rtnl_link_ifmap map;
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memset(&map, 0, sizeof(map));
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map.mem_start = dev->mem_start;
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map.mem_end = dev->mem_end;
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map.base_addr = dev->base_addr;
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map.irq = dev->irq;
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map.dma = dev->dma;
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map.port = dev->if_port;
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if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
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goto nla_put_failure;
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}
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