From: Miri Korenblit <miriam.rachel.korenblit@intel.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
stable@vger.kernel.org
Subject: [PATCH v2] wifi: iwlwifi: fix a memory corruption
Date: Thu, 11 Jan 2024 15:07:25 +0200 [thread overview]
Message-ID: <20240111150610.2d2b8b870194.I14ed76505a5cf87304e0c9cc05cc0ae85ed3bf91@changeid> (raw)
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
iwl_fw_ini_trigger_tlv::data is a pointer to a __le32, which means that
if we copy to iwl_fw_ini_trigger_tlv::data + offset while offset is in
bytes, we'll write past the buffer.
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218233
Fixes: cf29c5b66b9f ("iwlwifi: dbg_ini: implement time point handling")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
v2: Change 'Link' to 'Closes'
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index b658cf228fbe..9160d81a871e 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright (C) 2018-2023 Intel Corporation
+ * Copyright (C) 2018-2024 Intel Corporation
*/
#include <linux/firmware.h>
#include "iwl-drv.h"
@@ -1096,7 +1096,7 @@ static int iwl_dbg_tlv_override_trig_node(struct iwl_fw_runtime *fwrt,
node_trig = (void *)node_tlv->data;
}
- memcpy(node_trig->data + offset, trig->data, trig_data_len);
+ memcpy((u8 *)node_trig->data + offset, trig->data, trig_data_len);
node_tlv->length = cpu_to_le32(size);
if (policy & IWL_FW_INI_APPLY_POLICY_OVERRIDE_CFG) {
--
2.34.1
reply other threads:[~2024-01-11 13:07 UTC|newest]
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