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https://github.com/Divested-Mobile/DivestOS-Build.git
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43 lines
1.7 KiB
Diff
43 lines
1.7 KiB
Diff
From e9dcd5aa01734b019c793220531e4ef1d82959f8 Mon Sep 17 00:00:00 2001
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From: Mukul Sharma <mukul@qti.qualcomm.com>
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Date: Thu, 17 Mar 2016 10:06:03 -0700
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Subject: wlan:Check priviledge permission before processing
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for SET_CHAR_GET_NONE IOCTL
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Kernel assumes all SET IOCTL commands are assigned with even
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numbers. But in our WLAN driver, some SET IOCTLS are assigned with
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odd numbers. This leads kernel fail to check, for some SET IOCTLs,
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whether user has the right permission to do SET operation.
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Hence, in driver, before processing SET_CHAR_GET_NONE IOCTLs, making
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sure user task has right permission to process the command.
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Bug: 27104184
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Change-Id: Iccf25a9d1f1a7c13d3aaf2fc4bd3aebba740dbb2
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Signed-off-by: Yuan Lin <yualin@google.com>
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---
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drivers/staging/prima/CORE/HDD/src/wlan_hdd_wext.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/drivers/staging/prima/CORE/HDD/src/wlan_hdd_wext.c b/drivers/staging/prima/CORE/HDD/src/wlan_hdd_wext.c
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index 964ed65..5e03595 100644
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--- a/drivers/staging/prima/CORE/HDD/src/wlan_hdd_wext.c
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+++ b/drivers/staging/prima/CORE/HDD/src/wlan_hdd_wext.c
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@@ -3864,6 +3864,13 @@ static int iw_setchar_getnone(struct net_device *dev, struct iw_request_info *in
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hdd_config_t *pConfig = pHddCtx->cfg_ini;
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#endif /* WLAN_FEATURE_VOWIFI */
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+ if (!capable(CAP_NET_ADMIN))
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+ {
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+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
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+ FL("permission check failed"));
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+ return -EPERM;
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+ }
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+
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VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: Received length %d", __func__, wrqu->data.length);
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VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: Received data %s", __func__, (char*)wrqu->data.pointer);
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--
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cgit v1.1
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