Alexander Potapenko fd2c83b357 net/packet: check length in getsockopt() called with PACKET_HDRLEN ... In the case getsockopt() is called with PACKET_HDRLEN and optlen < 4 |val| remains uninitialized and the syscall may behave differently depending on its value, and even copy garbage to userspace on certain architectures. To fix this we now return -EINVAL if optlen is too small. This bug has been detected with KMSAN. Signed-off-by: Alexander Potapenko <glider@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-04-25 14:05:52 -04:00
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Kconfig	packet: Diag core and basic socket info dumping	2012-08-14 16:56:33 -07:00
Makefile	packet: Diag core and basic socket info dumping	2012-08-14 16:56:33 -07:00
af_packet.c	net/packet: check length in getsockopt() called with PACKET_HDRLEN	2017-04-25 14:05:52 -04:00
diag.c	packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3	2017-01-10 21:02:42 -05:00
internal.h	packet: add classic BPF fanout mode	2015-08-17 14:22:47 -07:00