This patch assures data is only appended in output buffer when
data is not NULL and datalen is not zero.
Reviewed-by: Hante Meuleman <meuleman@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx>
---
.../net/wireless/brcm80211/brcmfmac/dhd_common.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
index 8121dba..6afb26c 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
@@ -80,8 +80,10 @@ brcmf_c_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
strncpy(buf, name, buflen);
/* append data onto the end of the name string */
- memcpy(&buf[len], data, datalen);
- len += datalen;
+ if (data && datalen) {
+ memcpy(&buf[len], data, datalen);
+ len += datalen;
+ }
return len;
}
--
1.7.9.5
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