From d60a5839ba987e2c9d365fef950cae0c9ad11010 Mon Sep 17 00:00:00 2001 From: SaidiReddy Yenuga Date: Tue, 21 Feb 2017 13:05:26 +0530 Subject: qcacld-3.0: Trim operation classes to max supported in change station qcacld-2.0 to qcacld-3.0 Propagation. Operation classes supported can be controlled by user, which can be sent greater than the max supported operations. This results in stack overflow in change station command. Add check to validate operations supported param given by user and if it exceeds max supported value, set it to max supported value. CRs-Fixed: 2002052 Change-Id: Idd3a35e38b091546a17d7ec6329f19429e5c289c --- core/hdd/src/wlan_hdd_cfg80211.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/core/hdd/src/wlan_hdd_cfg80211.c b/core/hdd/src/wlan_hdd_cfg80211.c index 2ac8896..8f13919 100644 --- a/core/hdd/src/wlan_hdd_cfg80211.c +++ b/core/hdd/src/wlan_hdd_cfg80211.c @@ -10513,6 +10513,14 @@ static int __wlan_hdd_change_station(struct wiphy *wiphy, hdd_notice("After removing duplcates StaParams.supported_channels_len: %d", StaParams.supported_channels_len); } + if (params->supported_oper_classes_len > + CDS_MAX_SUPP_OPER_CLASSES) { + hdd_notice("received oper classes:%d, resetting it to max supported: %d", + params->supported_oper_classes_len, + CDS_MAX_SUPP_OPER_CLASSES); + params->supported_oper_classes_len = + CDS_MAX_SUPP_OPER_CLASSES; + } qdf_mem_copy(StaParams.supported_oper_classes, params->supported_oper_classes, params->supported_oper_classes_len); -- cgit v1.1