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| author | Jon Maloy <jon.maloy@ericsson.com> | 2018-01-17 16:42:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-19 21:12:21 +0100 |
| commit | 60c2530696320ee6ffe4491c17079fa403790c98 (patch) | |
| tree | 619bdaecd86e48c1962a6866e40ada7e09c5addc /usr | |
| parent | l2tp: remove switch block in l2tp_nl_cmd_session_create() (diff) | |
| download | linux-60c2530696320ee6ffe4491c17079fa403790c98.tar.xz linux-60c2530696320ee6ffe4491c17079fa403790c98.zip | |
tipc: fix race between poll() and setsockopt()
Letting tipc_poll() dereference a socket's pointer to struct tipc_group
entails a race risk, as the group item may be deleted in a concurrent
tipc_sk_join() or tipc_sk_leave() thread.
We now move the 'open' flag in struct tipc_group to struct tipc_sock,
and let the former retain only a pointer to the moved field. This will
eliminate the race risk.
Reported-by: syzbot+799dafde0286795858ac@syzkaller.appspotmail.com
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions