diff options
| author | kangjie <kangjielu@gmail.com> | 2016-05-03 21:49:23 -0400 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2016-10-29 01:34:00 +0200 |
| commit | d55e31a0901339adf8f0f283a5b65c362e28e63e (patch) | |
| tree | 0305ebcc3b9e913ceddbc38b4e0f36aec9a3b6a5 /net | |
| parent | 2192f5875332995aedb8771b55f46db42a2dd0d6 (diff) | |
| download | kernel_samsung_tuna-d55e31a0901339adf8f0f283a5b65c362e28e63e.zip kernel_samsung_tuna-d55e31a0901339adf8f0f283a5b65c362e28e63e.tar.gz kernel_samsung_tuna-d55e31a0901339adf8f0f283a5b65c362e28e63e.tar.bz2 | |
fix infoleak in rtnetlink
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”
Bug: 28620102
Change-Id: I13da380c6fe8abca49e3cf9f05293c02b44d2e5e
Signed-off-by: kangjie <kangjielu@gmail.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/rtnetlink.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 4698e7c..f37b870 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -915,14 +915,14 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, NLA_PUT_STRING(skb, IFLA_IFALIAS, dev->ifalias); if (1) { - struct rtnl_link_ifmap map = { - .mem_start = dev->mem_start, - .mem_end = dev->mem_end, - .base_addr = dev->base_addr, - .irq = dev->irq, - .dma = dev->dma, - .port = dev->if_port, - }; + struct rtnl_link_ifmap map; + memset(&map, 0, sizeof(map)); + map.mem_start = dev->mem_start; + map.mem_end = dev->mem_end; + map.base_addr = dev->base_addr; + map.irq = dev->irq; + map.dma = dev->dma; + map.port = dev->if_port; NLA_PUT(skb, IFLA_MAP, sizeof(map), &map); } |