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net: tipc: fix a missing check of nla_nest_start
nla_nest_start could fail and requires a check. The fix returns -EMSGSIZE if it fails. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 3 additions and 0 deletions
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@ -919,6 +919,9 @@ int tipc_group_fill_sock_diag(struct tipc_group *grp, struct sk_buff *skb)
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{
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{
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struct nlattr *group = nla_nest_start(skb, TIPC_NLA_SOCK_GROUP);
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struct nlattr *group = nla_nest_start(skb, TIPC_NLA_SOCK_GROUP);
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if (!group)
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return -EMSGSIZE;
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if (nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_ID,
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if (nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_ID,
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grp->type) ||
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grp->type) ||
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nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_INSTANCE,
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nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_INSTANCE,
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