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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Qing Xu <m1s5p6688@gmail.com>, Kalle Valo <kvalo@codeaurora.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.5 484/542] mwifiex: Fix possible buffer overflows in mwifiex_ret_wmm_get_status()
Date: Fri, 14 Feb 2020 10:47:56 -0500
Message-ID: <20200214154854.6746-484-sashal@kernel.org> (raw)
In-Reply-To: <20200214154854.6746-1-sashal@kernel.org>

From: Qing Xu <m1s5p6688@gmail.com>

[ Upstream commit 3a9b153c5591548612c3955c9600a98150c81875 ]

mwifiex_ret_wmm_get_status() calls memcpy() without checking the
destination size.Since the source is given from remote AP which
contains illegal wmm elements , this may trigger a heap buffer
overflow.
Fix it by putting the length check before calling memcpy().

Signed-off-by: Qing Xu <m1s5p6688@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/marvell/mwifiex/wmm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/wmm.c b/drivers/net/wireless/marvell/mwifiex/wmm.c
index 41f0231376c01..132f9e8ed68c1 100644
--- a/drivers/net/wireless/marvell/mwifiex/wmm.c
+++ b/drivers/net/wireless/marvell/mwifiex/wmm.c
@@ -970,6 +970,10 @@ int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
 				    "WMM Parameter Set Count: %d\n",
 				    wmm_param_ie->qos_info_bitmap & mask);
 
+			if (wmm_param_ie->vend_hdr.len + 2 >
+				sizeof(struct ieee_types_wmm_parameter))
+				break;
+
 			memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
 			       wmm_ie, wmm_param_ie,
 			       wmm_param_ie->vend_hdr.len + 2);
-- 
2.20.1


  parent reply index

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:39 ` [PATCH AUTOSEL 5.5 004/542] ath10k: Fix qmi init error handling Sasha Levin
2020-02-14 15:39 ` [PATCH AUTOSEL 5.5 005/542] wil6210: fix break that is never reached because of zero'ing of a retry counter Sasha Levin
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 026/542] brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev() Sasha Levin
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 027/542] brcmfmac: Fix use after free in brcmf_sdio_readframes() Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 107/542] ath10k: Correct the DMA direction for management tx buffers Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 109/542] rtw88: fix rate mask for 1SS chip Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 110/542] brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362 Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 111/542] libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 112/542] libertas: make lbs_ibss_join_existing() return error code on rates overflow Sasha Levin
2020-02-14 15:42 ` [PATCH AUTOSEL 5.5 132/542] mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap Sasha Levin
2020-02-14 15:42 ` [PATCH AUTOSEL 5.5 167/542] ath10k: correct the tlv len of ath10k_wmi_tlv_op_gen_config_pno_start Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 226/542] b43legacy: Fix -Wcast-function-type Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 227/542] ipw2x00: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 228/542] iwlegacy: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 229/542] rtlwifi: rtl_pci: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 230/542] bcma: remove set but not used variable 'sizel' Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 231/542] orinoco: avoid assertion in case of NULL pointer Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 471/542] ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 472/542] hostap: Adjust indentation in prism2_hostapd_add_sta Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 473/542] rtw88: fix potential NULL skb access in TX ISR Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 474/542] rtlwifi: rtl8821ae: remove unused variables Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 475/542] rtlwifi: rtl8192ee: " Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 476/542] rtlwifi: rtl8723ae: " Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 477/542] iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop Sasha Levin
2020-02-14 15:47 ` Sasha Levin [this message]
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 485/542] mwifiex: Fix possible buffer overflows in mwifiex_cmd_append_vsie_tlv() Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 516/542] iwlwifi: mvm: Fix thermal zone registration Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 517/542] iwlwifi: mvm: avoid use after free for pmsr request Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 518/542] iwlwifi: mvm: Check the sta is not NULL in iwl_mvm_cfg_he_sta() Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 519/542] iwlwifi: mvm: fix TDLS discovery with the new firmware API Sasha Levin

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