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ipv6: seg6_genl_set_tunsrc() must check kmemdup() return value

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seg6_genl_get_tunsrc() and set_tun_src() do not handle tun_src being
possibly NULL, so we must check kmemdup() return value and abort if
it is NULL

Fixes: 915d7e5e59 ("ipv6: sr: add code base for control plane support of SR-IPv6")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: David Lebrun <[email protected]>
Acked-by: David Lebrun <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2017-01-20 07:57:42 -08:00 • committed by David S. Miller
commit e363116b90
1 changed files with 2 additions and 0 deletions
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2
net/ipv6/seg6.c
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@ -176,6 +176,8 @@ static int seg6_genl_set_tunsrc(struct sk_buff *skb, struct genl_info *info)
val = nla_data(info->attrs[SEG6_ATTR_DST]);
t_new = kmemdup(val, sizeof(*val), GFP_KERNEL);
if (!t_new)
return -ENOMEM;
mutex_lock(&sdata->lock);