Re: [PATCH 1/2] dccp: ccid: move timers to struct dccp_sock

Richard Sailer <[email protected]>
Newsgroups org.kernel.vger.dccp,org.kernel.vger.linux-kernel,org.kernel.vger.netdev
Message-ID <[email protected]>
On 13/10/2020 19:18, Kleber Sacilotto de Souza wrote:
> From: Thadeu Lima de Souza Cascardo <[email protected]>
> 
> When dccps_hc_tx_ccid is freed, ccid timers may still trigger. The reason
> del_timer_sync can't be used is because this relies on keeping a reference
> to struct sock. But as we keep a pointer to dccps_hc_tx_ccid and free that
> during disconnect, the timer should really belong to struct dccp_sock.
> 
> This addresses CVE-2020-16119.
> 
> Fixes: 839a6094140a (net: dccp: Convert timers to use timer_setup())
> Signed-off-by: Thadeu Lima de Souza Cascardo <[email protected]>
> Signed-off-by: Kleber Sacilotto de Souza <[email protected]>

Acked-bd: Richard Sailer <[email protected]>

Implementation and concept looks fine to me
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