diff options
Diffstat (limited to 'drivers/net/wireless/rsi/rsi_91x_hal.c')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_hal.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_hal.c b/drivers/net/wireless/rsi/rsi_91x_hal.c index a0c36144eb0b..501071104a9f 100644 --- a/drivers/net/wireless/rsi/rsi_91x_hal.c +++ b/drivers/net/wireless/rsi/rsi_91x_hal.c @@ -431,6 +431,7 @@ int rsi_prepare_beacon(struct rsi_common *common, struct sk_buff *skb) struct ieee80211_vif *vif; struct sk_buff *mac_bcn; u8 vap_id = 0, i; + unsigned int tailroom; u16 tim_offset = 0; for (i = 0; i < RSI_MAX_VIFS; i++) { @@ -480,6 +481,13 @@ int rsi_prepare_beacon(struct rsi_common *common, struct sk_buff *skb) if (mac_bcn->data[tim_offset + 2] == 0) bcn_frm->frame_info |= cpu_to_le16(RSI_DATA_DESC_DTIM_BEACON); + tailroom = skb_tailroom(skb); + if (tailroom < FRAME_DESC_SZ || + mac_bcn->len > tailroom - FRAME_DESC_SZ) { + dev_kfree_skb(mac_bcn); + return -EMSGSIZE; + } + memcpy(&skb->data[FRAME_DESC_SZ], mac_bcn->data, mac_bcn->len); skb_put(skb, mac_bcn->len + FRAME_DESC_SZ); |