ipv6: do not set routes if disable_ipv6 has been enabled

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Do not allow setting ipv6 routes from userspace if disable_ipv6 has been
enabled. The issue can be triggered using the following reproducer:

- sysctl net.ipv6.conf.all.disable_ipv6=1
- ip -6 route add a🅱️c:d::/64 dev em1
- ip -6 route show
  a🅱️c:d::/64 dev em1 metric 1024 pref medium

Fix it checking disable_ipv6 value in ip6_route_info_create routine

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Lorenzo Bianconi 2018-03-29 11:02:24 +02:00 • committed by David S. Miller

parent d162190bde

commit 428604fb11

1 changed files with 6 additions and 0 deletions

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net/ipv6/route.c

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