tree 718c474303e1a97dcaeac4337de15a4ec78dd31e
parent ca2656dccef64c437d6717468bffd3762b11816e
author Mathias Krause <minipli@googlemail.com> 1361582027 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1361985684 -0800

sock_diag: Fix out-of-bounds access to sock_diag_handlers[]

[ Upstream commit 6e601a53566d84e1ffd25e7b6fe0b6894ffd79c0 ]

Userland can send a netlink message requesting SOCK_DIAG_BY_FAMILY
with a family greater or equal then AF_MAX -- the array size of
sock_diag_handlers[]. The current code does not test for this
condition therefore is vulnerable to an out-of-bound access opening
doors for a privilege escalation.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>