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author | Daniel Borkmann <daniel@iogearbox.net> | 2015-03-27 19:37:41 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2015-04-01 11:26:42 +0200 |
commit | afb7718016fcb0370ac29a83b2839c78b76c2960 (patch) | |
tree | 41dbbd1901d52632a4570bcd76f8506e9a0edf29 /net/netfilter/nft_meta.c | |
parent | 9d0982927e79049675cb6c6c04a0ebb3dad5a434 (diff) |
netfilter: x_tables: fix cgroup matching on non-full sks
While originally only being intended for outgoing traffic, commit
a00e76349f35 ("netfilter: x_tables: allow to use cgroup match for
LOCAL_IN nf hooks") enabled xt_cgroups for the NF_INET_LOCAL_IN hook
as well, in order to allow for nfacct accounting.
Besides being currently limited to early demuxes only, commit
a00e76349f35 forgot to add a check if we deal with full sockets,
i.e. in this case not with time wait sockets. TCP time wait sockets
do not have the same memory layout as full sockets, a lower memory
footprint and consequently also don't have a sk_classid member;
probing for sk_classid member there could potentially lead to a
crash.
Fixes: a00e76349f35 ("netfilter: x_tables: allow to use cgroup match for LOCAL_IN nf hooks")
Cc: Alexey Perevalov <a.perevalov@samsung.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nft_meta.c')
0 files changed, 0 insertions, 0 deletions