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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2013-08-01 12:36:57 +0300 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2013-08-05 17:36:04 +0200 |
| commit | e4d091d7bf787cd303383725b8071d0bae76f981 (patch) | |
| tree | 6c9f1bf8e0c0893ebe1ab4eac1151ba6df635142 /net/netfilter/nfnetlink_log.c | |
| parent | netfilter: xt_TCPOPTSTRIP: fix possible off by one access (diff) | |
| download | linux-dev-e4d091d7bf787cd303383725b8071d0bae76f981.tar.xz linux-dev-e4d091d7bf787cd303383725b8071d0bae76f981.zip | |
netfilter: nfnetlink_{log,queue}: fix information leaks in netlink message
These structs have a "_pad" member. Also the "phw" structs have an 8
byte "hw_addr[]" array but sometimes only the first 6 bytes are
initialized.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nfnetlink_log.c')
| -rw-r--r-- | net/netfilter/nfnetlink_log.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 962e9792e317..d92cc317bf8b 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -419,6 +419,7 @@ __build_packet_message(struct nfnl_log_net *log, nfmsg->version = NFNETLINK_V0; nfmsg->res_id = htons(inst->group_num); + memset(&pmsg, 0, sizeof(pmsg)); pmsg.hw_protocol = skb->protocol; pmsg.hook = hooknum; @@ -498,7 +499,10 @@ __build_packet_message(struct nfnl_log_net *log, if (indev && skb->dev && skb->mac_header != skb->network_header) { struct nfulnl_msg_packet_hw phw; - int len = dev_parse_header(skb, phw.hw_addr); + int len; + + memset(&phw, 0, sizeof(phw)); + len = dev_parse_header(skb, phw.hw_addr); if (len > 0) { phw.hw_addrlen = htons(len); if (nla_put(inst->skb, NFULA_HWADDR, sizeof(phw), &phw)) |