From c10fe0cc3ec4089d5da21faa732d74a40efbc07a Mon Sep 17 00:00:00 2001 From: Len Baker Date: Sat, 17 Jul 2021 17:20:32 +0200 Subject: [PATCH] staging/wlan-ng: Remove all strcpy() uses in favor of strscpy() strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. The safe replacement is strscpy(). Signed-off-by: Len Baker Link: https://lore.kernel.org/r/20210717152032.10164-1-len.baker@gmx.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wlan-ng/prism2fw.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/wlan-ng/prism2fw.c b/drivers/staging/wlan-ng/prism2fw.c index 94800c0..02a2191 100644 --- a/drivers/staging/wlan-ng/prism2fw.c +++ b/drivers/staging/wlan-ng/prism2fw.c @@ -296,7 +296,7 @@ static int prism2_fwapply(const struct ihex_binrec *rfptr, memset(&getmsg, 0, sizeof(getmsg)); getmsg.msgcode = DIDMSG_DOT11REQ_MIBGET; getmsg.msglen = sizeof(getmsg); - strcpy(getmsg.devname, wlandev->name); + strscpy(getmsg.devname, wlandev->name, sizeof(getmsg.devname)); getmsg.mibattribute.did = DIDMSG_DOT11REQ_MIBGET_MIBATTRIBUTE; getmsg.mibattribute.status = P80211ENUM_msgitem_status_data_ok; @@ -786,7 +786,7 @@ static int read_cardpda(struct pda *pda, struct wlandevice *wlandev) /* set up the msg */ msg->msgcode = DIDMSG_P2REQ_READPDA; msg->msglen = sizeof(msg); - strcpy(msg->devname, wlandev->name); + strscpy(msg->devname, wlandev->name, sizeof(msg->devname)); msg->pda.did = DIDMSG_P2REQ_READPDA_PDA; msg->pda.len = HFA384x_PDA_LEN_MAX; msg->pda.status = P80211ENUM_msgitem_status_no_value; @@ -1017,7 +1017,7 @@ static int writeimage(struct wlandevice *wlandev, struct imgchunk *fchunk, } /* Initialize the messages */ - strcpy(rstmsg->devname, wlandev->name); + strscpy(rstmsg->devname, wlandev->name, sizeof(rstmsg->devname)); rstmsg->msgcode = DIDMSG_P2REQ_RAMDL_STATE; rstmsg->msglen = sizeof(*rstmsg); rstmsg->enable.did = DIDMSG_P2REQ_RAMDL_STATE_ENABLE; @@ -1030,7 +1030,7 @@ static int writeimage(struct wlandevice *wlandev, struct imgchunk *fchunk, rstmsg->exeaddr.len = sizeof(u32); rstmsg->resultcode.len = sizeof(u32); - strcpy(rwrmsg->devname, wlandev->name); + strscpy(rwrmsg->devname, wlandev->name, sizeof(rwrmsg->devname)); rwrmsg->msgcode = DIDMSG_P2REQ_RAMDL_WRITE; rwrmsg->msglen = sizeof(*rwrmsg); rwrmsg->addr.did = DIDMSG_P2REQ_RAMDL_WRITE_ADDR; -- 2.7.4