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| author | Pablo Neira <[email protected]> | 2015-01-29 09:51:53 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-01-31 01:43:47 +0000 |
| commit | 8b7c36d810c61ab16997f4387fc16291410700f8 (patch) | |
| tree | f8279a3912807e9cc53eea82eef57bd8b8c4375a /drivers/net/xen-netback/interface.c | |
| parent | ipv4: Don't increase PMTU with Datagram Too Big message. (diff) | |
| download | kernel-8b7c36d810c61ab16997f4387fc16291410700f8.tar.gz kernel-8b7c36d810c61ab16997f4387fc16291410700f8.zip | |
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 <[email protected]>
Reported-by: Ivan Delalande <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
0 files changed, 0 insertions, 0 deletions