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41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
From 5cc2ac840e36a3342c5194c20b314f0bb95ef7e1 Mon Sep 17 00:00:00 2001
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From: Nishank Aggarwal <naggar@codeaurora.org>
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Date: Thu, 12 Jan 2017 14:32:02 +0530
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Subject: qcacld-2.0: Fix buffer overflow in WLANSAP_Set_WPARSNIes()
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Currently In WLANSAP_Set_WPARSNIes() the parameter WPARSNIEsLen
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is user-controllable and never validates which uses as the length
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for a memory copy. This enables user-space applications to corrupt
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heap memory and potentially crash the kernel.
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Fix is to validate the WPARSNIes length to its max before use as the
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length for a memory copy.
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Change-Id: I7aff731aeae22bfd84beb955439a799abef37f68
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CRs-Fixed: 1102648
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---
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CORE/HDD/src/wlan_hdd_hostapd.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/CORE/HDD/src/wlan_hdd_hostapd.c b/CORE/HDD/src/wlan_hdd_hostapd.c
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index 693c0c9..59b32f2 100644
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--- a/CORE/HDD/src/wlan_hdd_hostapd.c
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+++ b/CORE/HDD/src/wlan_hdd_hostapd.c
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@@ -6099,6 +6099,13 @@ static int __iw_set_ap_genie(struct net_device *dev,
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return 0;
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}
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+ if (wrqu->data.length > DOT11F_IE_RSN_MAX_LEN) {
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+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
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+ "%s: WPARSN Ie input length is more than max[%d]", __func__,
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+ wrqu->data.length);
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+ return -EINVAL;
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+ }
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+
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switch (genie[0])
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{
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case DOT11F_EID_WPA:
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--
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cgit v1.1
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