From 350aede603f7db7a9b4c1a340fbe89ccae6523a2 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Sun, 5 Sep 2010 01:58:18 +0200 Subject: Revert: "Staging: batman-adv: Adding netfilter-bridge hooks" This reverts commit 96d592ed599434d2d5f339a1d282871bc6377d2c. The netfilter hook seems to be misused and may leak skbs in situations when NF_HOOK returns NF_STOLEN. It may not filter everything as expected. Also the ethernet bridge tables are not yet capable to understand batman-adv packet correctly. It was only added for testing purposes and can be removed again. Reported-by: Vasiliy Kulikov Signed-off-by: Sven Eckelmann Signed-off-by: Greg Kroah-Hartman --- drivers/staging/batman-adv/hard-interface.c | 13 ------------- drivers/staging/batman-adv/send.c | 8 ++------ 2 files changed, 2 insertions(+), 19 deletions(-) diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c index baa8b05b9e8d..6e973a79aa25 100644 --- a/drivers/staging/batman-adv/hard-interface.c +++ b/drivers/staging/batman-adv/hard-interface.c @@ -30,7 +30,6 @@ #include "hash.h" #include -#include #define MIN(x, y) ((x) < (y) ? (x) : (y)) @@ -431,11 +430,6 @@ out: return NOTIFY_DONE; } -static int batman_skb_recv_finish(struct sk_buff *skb) -{ - return NF_ACCEPT; -} - /* receive a packet with the batman ethertype coming on a hard * interface */ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev, @@ -456,13 +450,6 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev, if (atomic_read(&module_state) != MODULE_ACTIVE) goto err_free; - /* if netfilter/ebtables wants to block incoming batman - * packets then give them a chance to do so here */ - ret = NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, dev, NULL, - batman_skb_recv_finish); - if (ret != 1) - goto err_out; - /* packet should hold at least type and version */ if (unlikely(skb_headlen(skb) < 2)) goto err_free; diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c index 055edee7b4e4..da3c82e47bbd 100644 --- a/drivers/staging/batman-adv/send.c +++ b/drivers/staging/batman-adv/send.c @@ -29,7 +29,6 @@ #include "vis.h" #include "aggregation.h" -#include static void send_outstanding_bcast_packet(struct work_struct *work); @@ -92,12 +91,9 @@ int send_skb_packet(struct sk_buff *skb, /* dev_queue_xmit() returns a negative result on error. However on * congestion and traffic shaping, it drops and returns NET_XMIT_DROP - * (which is > 0). This will not be treated as an error. - * Also, if netfilter/ebtables wants to block outgoing batman - * packets then giving them a chance to do so here */ + * (which is > 0). This will not be treated as an error. */ - return NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, - dev_queue_xmit); + return dev_queue_xmit(skb); send_skb_err: kfree_skb(skb); return NET_XMIT_DROP; -- cgit v1.2.3 From dd173abfead903c7df54e977535973f3312cd307 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 6 Sep 2010 14:32:30 +0200 Subject: Staging: vt6655: fix buffer overflow "param->u.wpa_associate.wpa_ie_len" comes from the user. We should check it so that the copy_from_user() doesn't overflow the buffer. Also further down in the function, we assume that if "param->u.wpa_associate.wpa_ie_len" is set then "abyWPAIE[0]" is initialized. To make that work, I changed the test here to say that if "wpa_ie_len" is set then "wpa_ie" has to be a valid pointer or we return -EINVAL. Oddly, we only use the first element of the abyWPAIE[] array. So I suspect there may be some other issues in this function. Signed-off-by: Dan Carpenter Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6655/wpactl.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/staging/vt6655/wpactl.c b/drivers/staging/vt6655/wpactl.c index 0142338bcafe..4bdb8362de82 100644 --- a/drivers/staging/vt6655/wpactl.c +++ b/drivers/staging/vt6655/wpactl.c @@ -766,9 +766,14 @@ static int wpa_set_associate(PSDevice pDevice, DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "wpa_ie_len = %d\n", param->u.wpa_associate.wpa_ie_len); - if (param->u.wpa_associate.wpa_ie && - copy_from_user(&abyWPAIE[0], param->u.wpa_associate.wpa_ie, param->u.wpa_associate.wpa_ie_len)) - return -EINVAL; + if (param->u.wpa_associate.wpa_ie_len) { + if (!param->u.wpa_associate.wpa_ie) + return -EINVAL; + if (param->u.wpa_associate.wpa_ie_len > sizeof(abyWPAIE)) + return -EINVAL; + if (copy_from_user(&abyWPAIE[0], param->u.wpa_associate.wpa_ie, param->u.wpa_associate.wpa_ie_len)) + return -EFAULT; + } if (param->u.wpa_associate.mode == 1) pMgmt->eConfigMode = WMAC_CONFIG_IBSS_STA; -- cgit v1.2.3