Re: [PATCH net] igmp: use the joined device when leaving a multicast group

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Mon,  9 Nov 2026 21:53:11 +0900 you wrote:
> ip_mc_leave_group() resolves in_dev from the leave request before
> matching the request against the socket's multicast membership list.
> This lookup can return NULL even while the interface recorded in the
> matched membership (iml->multi.imr_ifindex) is still alive:
> 
> 1. An application joins a group using a local IPv4 address, that
>    secondary address is later removed while the interface stays up,
>    and the application leaves using the same 8-byte ip_mreq.
> 2. An unprivileged user joins a group with a 12-byte ip_mreqn
>    specifying a valid imr_ifindex and a nonlocal imr_address, then
>    leaves with an 8-byte ip_mreq containing that nonlocal address
>    and no ifindex.
> 
> [...]

Here is the summary with links:
  - [net] igmp: use the joined device when leaving a multicast group
    https://git.kernel.org/netdev/net/c/19ec8416a76c

You are awesome, thank you!
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