Re: [PATCH] dccp: don't duplicate ccid when cloning dccp sock
From: patchwork-bot+netdevbpf@kernel.org
Date: 2021-09-08 10:40:17
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Hello: This patch was applied to netdev/net.git (refs/heads/master): On Wed, 8 Sep 2021 03:40:59 +0000 you wrote:
Commit 2677d2067731 ("dccp: don't free ccid2_hc_tx_sock ...") fixed
a UAF but reintroduced CVE-2017-6074.
When the sock is cloned, two dccps_hc_tx_ccid will reference to the
same ccid. So one can free the ccid object twice from two socks after
cloning.
[...]
Here is the summary with links:
- dccp: don't duplicate ccid when cloning dccp sock
https://git.kernel.org/netdev/net/c/d9ea761fdd19
You are awesome, thank you!
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