diff options
| author | Willem de Bruijn <willemb@google.com> | 2017-08-10 19:41:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-10 19:52:12 +0300 |
| commit | c27927e372f0785f3303e8fad94b85945e2c97b7 (patch) | |
| tree | 3602b8aeb2cc349ba954d4ff17028d364e395c56 /mm/shmem.c | |
| parent | 85f1bd9a7b5a79d5baa8bf44af19658f7bf77bfa (diff) | |
| download | linux-c27927e372f0785f3303e8fad94b85945e2c97b7.tar.xz | |
packet: fix tp_reserve race in packet_set_ring
Updates to tp_reserve can race with reads of the field in
packet_set_ring. Avoid this by holding the socket lock during
updates in setsockopt PACKET_RESERVE.
This bug was discovered by syzkaller.
Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions