netdev - Re: [PATCH net] bpf, sockmap: fix race in sock_map

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Date:   Mon, 05 Dec 2022 03:00:15 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        netdev@...r.kernel.org, eric.dumazet@...il.com,
        syzkaller@...glegroups.com, jakub@...udflare.com,
        john.fastabend@...il.com, ast@...nel.org, daniel@...earbox.net,
        songliubraving@...com
Subject: Re: [PATCH net] bpf, sockmap: fix race in sock_map_free()

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@...nel.org>:

On Fri,  2 Dec 2022 11:16:40 +0000 you wrote:
> sock_map_free() calls release_sock(sk) without owning a reference
> on the socket. This can cause use-after-free as syzbot found [1]
> 
> Jakub Sitnicki already took care of a similar issue
> in sock_hash_free() in commit 75e68e5bf2c7 ("bpf, sockhash:
> Synchronize delete from bucket list on map free")
> 
> [...]

Here is the summary with links:
  - [net] bpf, sockmap: fix race in sock_map_free()
    https://git.kernel.org/bpf/bpf-next/c/0a182f8d6074

You are awesome, thank you!
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