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| author | Ilya Maximets <i.maximets@ovn.org> | 2021-04-04 19:50:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-14 08:47:22 +0200 |
| commit | e93c80d4bdc8f4b80317b88b13f6945788b2ff67 (patch) | |
| tree | f0671abeae6866e9059acd3f6a0a80a82c449e98 /net | |
| parent | ba0e8db170c301b73aa71eb4585218f3105cea0a (diff) | |
| download | linux-e93c80d4bdc8f4b80317b88b13f6945788b2ff67.tar.gz linux-e93c80d4bdc8f4b80317b88b13f6945788b2ff67.tar.bz2 linux-e93c80d4bdc8f4b80317b88b13f6945788b2ff67.zip | |
openvswitch: fix send of uninitialized stack memory in ct limit reply
[ Upstream commit 4d51419d49930be2701c2633ae271b350397c3ca ]
'struct ovs_zone_limit' has more members than initialized in
ovs_ct_limit_get_default_limit(). The rest of the memory is a random
kernel stack content that ends up being sent to userspace.
Fix that by using designated initializer that will clear all
non-specified fields.
Fixes: 11efd5cb04a1 ("openvswitch: Support conntrack zone limit")
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Acked-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/openvswitch/conntrack.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c index 5eddfe7bd391..2316efd6ace8 100644 --- a/net/openvswitch/conntrack.c +++ b/net/openvswitch/conntrack.c @@ -2032,10 +2032,10 @@ static int ovs_ct_limit_del_zone_limit(struct nlattr *nla_zone_limit, static int ovs_ct_limit_get_default_limit(struct ovs_ct_limit_info *info, struct sk_buff *reply) { - struct ovs_zone_limit zone_limit; - - zone_limit.zone_id = OVS_ZONE_LIMIT_DEFAULT_ZONE; - zone_limit.limit = info->default_limit; + struct ovs_zone_limit zone_limit = { + .zone_id = OVS_ZONE_LIMIT_DEFAULT_ZONE, + .limit = info->default_limit, + }; return nla_put_nohdr(reply, sizeof(zone_limit), &zone_limit); } |