Re: ip6_gre: paninc in ip6gre_header

From: gaoxingwang
Date: Mon May 29 2023 - 23:22:44 EST


>> Hello:
>> I am doing some fuzz test for kernel, the following crash was triggered.
>> My kernel version is 5.10.0.Have you encountered similar problems?
>> If there is a fix, please let me know.
>> Thank you very much.
>
>Please do not report fuzzer tests on old kernels.
>
>Yes, there is a fix already.

I've found this commit 5796015fa968a(ipv6: allocate enough headroom in ip6_finish_output2()) that I didn't patch for my kernel.
Is this the fix you have mentioned? I'm testing to see if it works, but it will take a few days.I'd appreciate it if you could reply.

>
>Make sure to use at least v5.10.180
>
>Thanks.