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| author | Eric Dumazet <edumazet@google.com> | 2017-03-03 14:08:21 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-07 13:58:33 -0800 |
| commit | 02b2faaf0af1d85585f6d6980e286d53612acfc2 (patch) | |
| tree | 1d5684fc4dd1f82e2fa7883e8f291674a2d3d8b7 /net/rxrpc/recvmsg.c | |
| parent | b73d2da8c724bb26885512e1ba47b91e2a9f48c3 (diff) | |
| download | lwn-02b2faaf0af1d85585f6d6980e286d53612acfc2.tar.gz lwn-02b2faaf0af1d85585f6d6980e286d53612acfc2.zip | |
tcp: fix various issues for sockets morphing to listen state
Dmitry Vyukov reported a divide by 0 triggered by syzkaller, exploiting
tcp_disconnect() path that was never really considered and/or used
before syzkaller ;)
I was not able to reproduce the bug, but it seems issues here are the
three possible actions that assumed they would never trigger on a
listener.
1) tcp_write_timer_handler
2) tcp_delack_timer_handler
3) MTU reduction
Only IPv6 MTU reduction was properly testing TCP_CLOSE and TCP_LISTEN
states from tcp_v6_mtu_reduced()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/recvmsg.c')
0 files changed, 0 insertions, 0 deletions