Re: [PATCH net v2] ipv6: prevent in6_dev_get() from resurrecting inet6_dev

[email protected] Tue, 04 Aug 2026 22:30:05 +0000

Newsgroups	org.kernel.vger.stable,org.kernel.vger.linux-kernel,org.kernel.vger.netdev
Message-ID	<178588260564.3813627.866249845630224776.git-patchwork-notify@kernel.org>

Hello:

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

On Mon,  3 Aug 2026 12:27:57 +0000 you wrote:
> From: Kyle Zeng <[email protected]>
> 
> in6_dev_get() reads dev->ip6_ptr under RCU and then unconditionally
> increments its refcount. Device teardown can clear the pointer and drop
> the last reference between these operations. The increment then
> resurrects an object whose RCU free has already been queued, so callers
> can use it after it is freed.
> 
> [...]

Here is the summary with links:
  - [net,v2] ipv6: prevent in6_dev_get() from resurrecting inet6_dev
    https://git.kernel.org/netdev/net/c/0e243671bc7b

You are awesome, thank you!
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