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| author | Matteo Croce <mcroce@redhat.com> | 2019-07-01 19:01:55 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-01 11:31:38 -0700 |
| commit | 2e60546368165c2449564d71f6005dda9205b5fb (patch) | |
| tree | e1f5449e770ac26eae92eef2b752e1f5fcb47794 /net/x25/x25_dev.c | |
| parent | 88405680ec57c35f5886dbb81b3f6f638f74f40d (diff) | |
| download | linux-2e60546368165c2449564d71f6005dda9205b5fb.tar.bz2 | |
ipv4: don't set IPv6 only flags to IPv4 addresses
Avoid the situation where an IPV6 only flag is applied to an IPv4 address:
# ip addr add 192.0.2.1/24 dev dummy0 nodad home mngtmpaddr noprefixroute
# ip -4 addr show dev dummy0
2: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
inet 192.0.2.1/24 scope global noprefixroute dummy0
valid_lft forever preferred_lft forever
Or worse, by sending a malicious netlink command:
# ip -4 addr show dev dummy0
2: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
inet 192.0.2.1/24 scope global nodad optimistic dadfailed home tentative mngtmpaddr noprefixroute stable-privacy dummy0
valid_lft forever preferred_lft forever
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/x25/x25_dev.c')
0 files changed, 0 insertions, 0 deletions