diff options
| author | Eric Dumazet <edumazet@google.com> | 2017-03-03 14:08:21 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-07-04 12:11:03 +0200 |
| commit | 606c8cfc9ff55256aef935d04cab400f9a91dc45 (patch) | |
| tree | 79d0fdeceb4b3aaa67274720fb8d00822bcad21d /include | |
| parent | e7850af646f237df42095cf6fc6fbdeae59e47b7 (diff) | |
tcp: fix various issues for sockets morphing to listen state
commit 02b2faaf0af1d85585f6d6980e286d53612acfc2 upstream.
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>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions