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https://github.com/Divested-Mobile/DivestOS-Build.git
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43 lines
1.6 KiB
Diff
43 lines
1.6 KiB
Diff
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From fd13b59e5a75b761f68fe34f09df1dce7a49acc2 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 10:11:40 -0700
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Subject: wlan:Check priviledge permission before processing
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for SET_PACKET_FILTER 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_PACKET_FILTER IOCTL, 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: I1edc65ee26c5e3e4260e0f6546434b0137493396
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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 5e03595..6a806f4 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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@@ -5834,6 +5834,13 @@ static int iw_set_packet_filter_params(struct net_device *dev, struct iw_request
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hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev);
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tpPacketFilterCfg pRequest = (tpPacketFilterCfg)wrqu->data.pointer;
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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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return wlan_hdd_set_filter(WLAN_HDD_GET_CTX(pAdapter), pRequest, pAdapter->sessionId);
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}
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#endif
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--
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cgit v1.1
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