ip6_tunnel: fix potential NULL pointer dereference

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[ Upstream commit c8965932a2 ]

The function ip6_tnl_validate assumes that the rtnl
attribute IFLA_IPTUN_PROTO always be filled . If this
attribute is not filled by  the userspace application
kernel get crashed with NULL pointer dereference. This
patch fixes the potential kernel crash when
IFLA_IPTUN_PROTO is missing .

Signed-off-by: Susant Sahani <susant@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Susant Sahani 2014-05-10 00:11:32 +05:30 • committed by Greg Kroah-Hartman

parent e31895fa97

commit a3db451d65

1 changed files with 1 additions and 1 deletions

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net/ipv6/ip6_tunnel.c

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