From a89dfebdad050598479c73c1a22e2323085b5596 Mon Sep 17 00:00:00 2001 From: Roel Kluin Date: Mon, 31 Aug 2009 12:26:43 +0200 Subject: [PATCH] Staging: rt2860: fix possible NULL dereferences Allocations may fail, prevent NULL dereferences. Signed-off-by: Roel Kluin Acked-by: Bartlomiej Zolnierkiewicz Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rt2860/common/ba_action.c | 4 ++++ drivers/staging/rt2860/common/cmm_data.c | 2 ++ drivers/staging/rt2860/rt_main_dev.c | 2 ++ 3 files changed, 8 insertions(+) diff --git a/drivers/staging/rt2860/common/ba_action.c b/drivers/staging/rt2860/common/ba_action.c index 79a5164..b7bbe99 100644 --- a/drivers/staging/rt2860/common/ba_action.c +++ b/drivers/staging/rt2860/common/ba_action.c @@ -867,6 +867,8 @@ VOID BAOriSessionTearDown( // force send specified TID DelBA MLME_DELBA_REQ_STRUCT DelbaReq; MLME_QUEUE_ELEM *Elem = (MLME_QUEUE_ELEM *) kmalloc(sizeof(MLME_QUEUE_ELEM), MEM_ALLOC_FLAG); + if (Elem == NULL) + return; NdisZeroMemory(&DelbaReq, sizeof(DelbaReq)); NdisZeroMemory(Elem, sizeof(MLME_QUEUE_ELEM)); @@ -900,6 +902,8 @@ VOID BAOriSessionTearDown( { MLME_DELBA_REQ_STRUCT DelbaReq; MLME_QUEUE_ELEM *Elem = (MLME_QUEUE_ELEM *) kmalloc(sizeof(MLME_QUEUE_ELEM), MEM_ALLOC_FLAG); + if (Elem == NULL) + return; NdisZeroMemory(&DelbaReq, sizeof(DelbaReq)); NdisZeroMemory(Elem, sizeof(MLME_QUEUE_ELEM)); diff --git a/drivers/staging/rt2860/common/cmm_data.c b/drivers/staging/rt2860/common/cmm_data.c index abbbcbfc..774fabb 100644 --- a/drivers/staging/rt2860/common/cmm_data.c +++ b/drivers/staging/rt2860/common/cmm_data.c @@ -2011,6 +2011,8 @@ UINT deaggregate_AMSDU_announce( { // avoid local heap overflow, use dyanamic allocation MLME_QUEUE_ELEM *Elem = (MLME_QUEUE_ELEM *) kmalloc(sizeof(MLME_QUEUE_ELEM), MEM_ALLOC_FLAG); + if (Elem == NULL) + return; memmove(Elem->Msg+(LENGTH_802_11 + LENGTH_802_1_H), pPayload, PayloadSize); Elem->MsgLen = LENGTH_802_11 + LENGTH_802_1_H + PayloadSize; WpaEAPOLKeyAction(pAd, Elem); diff --git a/drivers/staging/rt2860/rt_main_dev.c b/drivers/staging/rt2860/rt_main_dev.c index 7f44414..22f37cf 100644 --- a/drivers/staging/rt2860/rt_main_dev.c +++ b/drivers/staging/rt2860/rt_main_dev.c @@ -777,6 +777,8 @@ INT __devinit rt28xx_probe( // Allocate RTMP_ADAPTER miniport adapter structure handle = kmalloc(sizeof(struct os_cookie), GFP_KERNEL); + if (handle == NULL) + goto err_out_free_netdev;; RT28XX_HANDLE_DEV_ASSIGN(handle, dev_p); status = RTMPAllocAdapterBlock(handle, &pAd); -- 2.7.4