Hello: This patch was applied to netdev/net.git (master) by Paolo Abeni <pabeni@xxxxxxxxxx>: On Mon, 2 May 2022 10:40:18 +0900 you wrote: > syzbot is reporting use-after-free read in tcp_retransmit_timer() [1], > for TCP socket used by RDS is accessing sock_net() without acquiring a > refcount on net namespace. Since TCP's retransmission can happen after > a process which created net namespace terminated, we need to explicitly > acquire a refcount. > > Link: https://syzkaller.appspot.com/bug?extid=694120e1002c117747ed [1] > Reported-by: syzbot <syzbot+694120e1002c117747ed@xxxxxxxxxxxxxxxxxxxxxxxxx> > Fixes: 26abe14379f8e2fa ("net: Modify sk_alloc to not reference count the netns of kernel sockets.") > Fixes: 8a68173691f03661 ("net: sk_clone_lock() should only do get_net() if the parent is not a kernel socket") > Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> > Tested-by: syzbot <syzbot+694120e1002c117747ed@xxxxxxxxxxxxxxxxxxxxxxxxx> > > [...] Here is the summary with links: - [v2] net: rds: acquire refcount on TCP sockets https://git.kernel.org/netdev/net/c/3a58f13a881e You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
