From: Dan Carpenter <[email protected]>
[ Upstream commit d59dc92f1bccd5acde793aebdbb4f7121cf3f9af ]
The "rates_len" value needs to be capped so that the memcpy() doesn't
copy beyond the end of the array.
Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Adham Abozaeid <[email protected]>
Link: https://lore.kernel.org/r/20191017091832.GB31278@mwanda
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
drivers/staging/wilc1000/wilc_hif.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/wilc1000/wilc_hif.c
b/drivers/staging/wilc1000/wilc_hif.c
index d3d9ea284816a..77d0732f451be 100644
--- a/drivers/staging/wilc1000/wilc_hif.c
+++ b/drivers/staging/wilc1000/wilc_hif.c
@@ -473,6 +473,8 @@ void *wilc_parse_join_bss_param(struct cfg80211_bss *bss,
rates_ie = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies->data, ies->len);
if (rates_ie) {
rates_len = rates_ie[1];
+ if (rates_len > WILC_MAX_RATES_SUPPORTED)
+ rates_len = WILC_MAX_RATES_SUPPORTED;
param->supp_rates[0] = rates_len;
memcpy(¶m->supp_rates[1], rates_ie + 2, rates_len);
}
--
2.20.1
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