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| author | Gustavo A. R. Silva <garsilva@embeddedor.com> | 2017-11-14 21:26:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-15 06:16:07 +0100 |
| commit | b74912a2fdae9aadd20da502644aa8848c861954 (patch) | |
| tree | 140da6bfc4a9c7a811e20ece6f08131cc04c92c9 | |
| parent | Merge branch 'netem-fix-compilation-on-32-bit' (diff) | |
| download | linux-b74912a2fdae9aadd20da502644aa8848c861954.tar.xz linux-b74912a2fdae9aadd20da502644aa8848c861954.zip | |
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>
| -rw-r--r-- | net/openvswitch/meter.c | 2 |
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); } |