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| author | Pablo Neira <pablo@netfilter.org> | 2015-01-29 10:51:53 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-30 17:43:47 -0800 |
| commit | 8b7c36d810c61ab16997f4387fc16291410700f8 (patch) | |
| tree | f8279a3912807e9cc53eea82eef57bd8b8c4375a /net/sctp | |
| parent | 3cdaa5be9e81a914e633a6be7b7d2ef75b528562 (diff) | |
| download | op-kernel-dev-8b7c36d810c61ab16997f4387fc16291410700f8.zip op-kernel-dev-8b7c36d810c61ab16997f4387fc16291410700f8.tar.gz | |
netlink: fix wrong subscription bitmask to group mapping in
The subscription bitmask passed via struct sockaddr_nl is converted to
the group number when calling the netlink_bind() and netlink_unbind()
callbacks.
The conversion is however incorrect since bitmask (1 << 0) needs to be
mapped to group number 1. Note that you cannot specify the group number 0
(usually known as _NONE) from setsockopt() using NETLINK_ADD_MEMBERSHIP
since this is rejected through -EINVAL.
This problem became noticeable since 97840cb ("netfilter: nfnetlink:
fix insufficient validation in nfnetlink_bind") when binding to bitmask
(1 << 0) in ctnetlink.
Reported-by: Andre Tomt <andre@tomt.net>
Reported-by: Ivan Delalande <colona@arista.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
0 files changed, 0 insertions, 0 deletions
