Re: [PATCH net v3] ipv4: fix use-after-free in fib_nhc_update_mtu()

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <[email protected]>:

On Sat,  8 Aug 2026 02:17:10 +0800 you wrote:
> fib_nhc_update_mtu() walks the nexthop exception table under RTNL, but
> RTNL does not serialize this walk with PMTU exception updates. The walk
> uses rcu_dereference_protected() with a constant true condition without
> holding fnhe_lock.
> 
> The following interleaving can therefore occur:
> 
> [...]

Here is the summary with links:
  - [net,v3] ipv4: fix use-after-free in fib_nhc_update_mtu()
    https://git.kernel.org/netdev/net/c/bc5bde9ce3cc

You are awesome, thank you!
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