From: Kleber Souza <kleber.souza@canonical.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Gerrit Renker <gerrit@erg.abdn.ac.uk>,
"David S. Miller" <davem@davemloft.net>,
Thadeu Lima de Souza Cascardo <cascardo@canonical.com>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
"Alexander A. Klimov" <grandmaster@al2klimov.de>,
Kees Cook <keescook@chromium.org>,
Eric Dumazet <edumazet@google.com>,
Alexey Kodanev <alexey.kodanev@oracle.com>,
dccp@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] Revert "dccp: don't free ccid2_hc_tx_sock struct in dccp_disconnect()"
Date: Thu, 15 Oct 2020 11:23:53 +0200 [thread overview]
Message-ID: <686668d9-8d7a-1ad1-a210-0b6abaa8dc36@canonical.com> (raw)
In-Reply-To: <20201014204230.56cbfb12@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
On 15.10.20 05:42, Jakub Kicinski wrote:
> On Tue, 13 Oct 2020 19:18:49 +0200 Kleber Sacilotto de Souza wrote:
>> From: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
>>
>> 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?
We have received this report via a private Launchpad bug and the submitter
didn't provide any public email address, so we have only their name.
>
>> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
>> Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
prev parent reply other threads:[~2020-10-15 9:24 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-13 17:18 [PATCH 0/2] net: dccp: fix structure use-after-free Kleber Sacilotto de Souza
2020-10-13 17:18 ` [PATCH 1/2] dccp: ccid: move timers to struct dccp_sock Kleber Sacilotto de Souza
2020-10-13 18:58 ` Richard Sailer
2020-10-15 3:43 ` Jakub Kicinski
2020-10-15 10:53 ` Thadeu Lima de Souza Cascardo
2020-10-16 22:30 ` Jakub Kicinski
2020-11-09 11:48 ` Thadeu Lima de Souza Cascardo
2020-11-09 17:49 ` Jakub Kicinski
2020-11-09 21:09 ` Thadeu Lima de Souza Cascardo
2020-11-09 21:15 ` Jakub Kicinski
2020-11-09 21:31 ` Thadeu Lima de Souza Cascardo
2020-11-09 22:15 ` Jakub Kicinski
2020-11-10 11:19 ` Thadeu Lima de Souza Cascardo
2020-11-10 16:16 ` Jakub Kicinski
2020-10-13 17:18 ` [PATCH 2/2] Revert "dccp: don't free ccid2_hc_tx_sock struct in dccp_disconnect()" Kleber Sacilotto de Souza
2020-10-13 18:59 ` Richard Sailer
2020-10-15 3:42 ` Jakub Kicinski
2020-10-15 9:23 ` Kleber Souza [this message]
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