Willem de Bruijn 91b2b39b49 packet: fix tp_reserve race in packet_set_ring ...

[ Upstream commit c27927e372 ]

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: 8913336a7e ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-08-12 19:34:27 -07:00

..

af_packet.c

packet: fix tp_reserve race in packet_set_ring

2017-08-12 19:34:27 -07:00

diag.c

packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3

2017-01-10 21:02:42 -05:00

internal.h

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Kconfig

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Makefile

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