Re: [PATCH net v2] tipc: Fix uninit-value access in tipc_nl_node_reset_link_stats()

[Shigeru Yoshida]

On Mon, 23 Oct 2023 15:53:14 -0700, Jakub Kicinski wrote:
> On Sat, 21 Oct 2023 01:34:15 +0900 Shigeru Yoshida wrote:
>> Link names must be null-terminated strings. If a link name which is not
>> null-terminated is passed through netlink, strstr() and similar functions
>> can cause buffer overrun. This causes the above issue.
> 
> If strings need to be null-terminated you should switch the policy here
> https://elixir.bootlin.com/linux/v6.6-rc6/source/net/tipc/netlink.c#L91
> from NLA_STRING to NLA_NUL_STRING, no?

Thank you so much for the feedback. As I'm not so familiar with
Netlink, I'll study NLA_NUL_STRING a bit more and make an updated
patch.

Thanks,
Shigeru

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