diff options
| author | Sven Eckelmann <sven@narfation.org> | 2012-06-28 11:56:52 +0200 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2012-07-01 22:47:24 +0200 |
| commit | 162d549c6905485262635fe594db337efb2828b5 (patch) | |
| tree | 85346674b2ff741ec9053470736ba2d034156190 /net/batman-adv | |
| parent | batman-adv: fix counter summary length (diff) | |
| download | linux-162d549c6905485262635fe594db337efb2828b5.tar.xz linux-162d549c6905485262635fe594db337efb2828b5.zip | |
batman-adv: Don't leak information through uninitialized packet fields
The reserved fields in batman-adv packets are not set to a constant value. The
content of these memory regions is leaked unintentionally to the network.
This regression was introduced in 3b27ffb00fbe9d9189715ea13ce8712e2f0cb0c5
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv')
| -rw-r--r-- | net/batman-adv/soft-interface.c | 1 | ||||
| -rw-r--r-- | net/batman-adv/translation-table.c | 1 | ||||
| -rw-r--r-- | net/batman-adv/vis.c | 2 |
3 files changed, 4 insertions, 0 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index b7c655cf626a..9e4bb61301ec 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -214,6 +214,7 @@ static int batadv_interface_tx(struct sk_buff *skb, /* batman packet type: broadcast */ bcast_packet->header.packet_type = BATADV_BCAST; + bcast_packet->reserved = 0; /* hw address of first interface is the orig mac because only * this mac is known throughout the mesh diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 245cc9a068d8..a438f4b582fc 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -2052,6 +2052,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client, roam_adv_packet->header.packet_type = BATADV_ROAM_ADV; roam_adv_packet->header.version = BATADV_COMPAT_VERSION; roam_adv_packet->header.ttl = BATADV_TTL; + roam_adv_packet->reserved = 0; primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if) goto out; diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c index f09cc9ad6ad8..2a2ea0681469 100644 --- a/net/batman-adv/vis.c +++ b/net/batman-adv/vis.c @@ -589,6 +589,7 @@ static int batadv_generate_vis_packet(struct batadv_priv *bat_priv) packet->header.ttl = BATADV_TTL; packet->seqno = htonl(ntohl(packet->seqno) + 1); packet->entries = 0; + packet->reserved = 0; skb_trim(info->skb_packet, sizeof(*packet)); if (packet->vis_type == BATADV_VIS_TYPE_CLIENT_UPDATE) { @@ -890,6 +891,7 @@ int batadv_vis_init(struct batadv_priv *bat_priv) packet->header.packet_type = BATADV_VIS; packet->header.ttl = BATADV_TTL; packet->seqno = 0; + packet->reserved = 0; packet->entries = 0; INIT_LIST_HEAD(&bat_priv->vis_send_list); |