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Date:   Wed, 14 Oct 2020 20:42:30 -0700
From:   Jakub Kicinski <>
To:     Kleber Sacilotto de Souza <>
Cc:, Gerrit Renker <>,
        "David S. Miller" <>,
        Thadeu Lima de Souza Cascardo <>,
        "Gustavo A. R. Silva" <>,
        "Alexander A. Klimov" <>,
        Kees Cook <>,
        Eric Dumazet <>,
        Alexey Kodanev <>,,
Subject: Re: [PATCH 2/2] Revert "dccp: don't free ccid2_hc_tx_sock struct in

On Tue, 13 Oct 2020 19:18:49 +0200 Kleber Sacilotto de Souza wrote:
> From: Thadeu Lima de Souza Cascardo <>
> This reverts commit 2677d20677314101293e6da0094ede7b5526d2b1.
> This fixes an issue that after disconnect, dccps_hc_tx_ccid will still be
> kept, allowing the socket to be reused as a listener socket, and the cloned
> socket will free its dccps_hc_tx_ccid, leading to a later use after free,
> when the listener socket is closed.
> This addresses CVE-2020-16119.
> Fixes: 2677d2067731 (dccp: don't free ccid2_hc_tx_sock struct in dccp_disconnect())
> Reported-by: Hadar Manor

Does this person has an email address?

> Signed-off-by: Thadeu Lima de Souza Cascardo <>
> Signed-off-by: Kleber Sacilotto de Souza <>

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