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authorGustavo A. R. Silva <garsilva@embeddedor.com>2017-11-14 14:26:16 -0600
committerDavid S. Miller <davem@davemloft.net>2017-11-15 14:16:07 +0900
commitb74912a2fdae9aadd20da502644aa8848c861954 (patch)
tree140da6bfc4a9c7a811e20ece6f08131cc04c92c9 /net/openvswitch
parent69d481791f38f692707254406945d35591d12f40 (diff)
downloadlinux-b74912a2fdae9aadd20da502644aa8848c861954.tar.bz2
openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start
It seems that the intention of the code is to null check the value returned by function genlmsg_put. But the current code is null checking the address of the pointer that holds the value returned by genlmsg_put. Fix this by properly null checking the value returned by function genlmsg_put in order to avoid a pontential null pointer dereference. Addresses-Coverity-ID: 1461561 ("Dereference before null check") Addresses-Coverity-ID: 1461562 ("Dereference null return value") Fixes: 96fbc13d7e77 ("openvswitch: Add meter infrastructure") Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/meter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index 52ddd6c408b3..3fbfc78991ac 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -99,7 +99,7 @@ ovs_meter_cmd_reply_start(struct genl_info *info, u8 cmd,
*ovs_reply_header = genlmsg_put(skb, info->snd_portid,
info->snd_seq,
&dp_meter_genl_family, 0, cmd);
- if (!ovs_reply_header) {
+ if (!*ovs_reply_header) {
nlmsg_free(skb);
return ERR_PTR(-EMSGSIZE);
}