Re: [PATCH mptcp-net v2] selftests: mptcp: fix an UAF in mptcp_connect.c

Hi Gang,

On 14/08/2026 16:15, Gang Yan wrote:
> From: Gang Yan <[email protected]>
> 
> At the end of 'sock_connect_mptcp()', it calls 'freeaddrinfo(addr)',
> the 'peer' pointer (which points into 'addr') remains. Later, the main
> loop uses this peer pointer for reconnection attempts. If the memory has
> been freed and reused, the address data could be overwritten, resulting
> in an invalid remote address.
> 
> This patch keeps the addrinfo list allocated for the whole process
> lifetime so "peer" remains valid across reconnects; the memory will be
> released at exit() time.
Thank you for this fix!

Now in our tree:

New patches for t/upstream-net and t/upstream:
- 2596006d5efd: selftests: mptcp: fix an UAF in mptcp_connect.c
- Results: 52bf6f574345..e717f03d4d29 (export-net)
- Results: 55a0274d38e1..9262805f6805 (export)

Tests are now in progress:

- export-net:
https://github.com/multipath-tcp/mptcp_net-next/commit/dd8ec2cb0769c4609f78e605a00117448970247c/checks
- export:
https://github.com/multipath-tcp/mptcp_net-next/commit/19c6bf13fd58c0d98668764de2f3d68d975685c9/checks

Cheers,
Matt
-- 
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