mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-30 01:46:30 -05:00
77 lines
2.6 KiB
Diff
77 lines
2.6 KiB
Diff
From f51a152ad52108457ae6b1caf7a04857f25c4bed Mon Sep 17 00:00:00 2001
|
|
From: Skylar Chang <chiaweic@codeaurora.org>
|
|
Date: Wed, 15 Mar 2017 21:27:35 -0700
|
|
Subject: msm: ipa: fix security issues in ipa wan driver
|
|
|
|
Fix the security issue in handling add mux channel event
|
|
in ipa wan driver.
|
|
|
|
Bug: 36490777
|
|
Change-Id: Ic2ffeafddad4954ec3ecba0d675646d0790eede7
|
|
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
|
|
Acked-by: Shihuan Liu <shihuanl@qti.qualcomm.com>
|
|
---
|
|
drivers/platform/msm/ipa/rmnet_ipa.c | 8 +++++++-
|
|
1 file changed, 7 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/platform/msm/ipa/rmnet_ipa.c b/drivers/platform/msm/ipa/rmnet_ipa.c
|
|
index a149a9e..0d6fb33 100644
|
|
--- a/drivers/platform/msm/ipa/rmnet_ipa.c
|
|
+++ b/drivers/platform/msm/ipa/rmnet_ipa.c
|
|
@@ -57,6 +57,7 @@ static atomic_t is_initialized;
|
|
static atomic_t is_ssr;
|
|
|
|
u32 apps_to_ipa_hdl, ipa_to_apps_hdl; /* get handler from ipa */
|
|
+static struct mutex add_mux_channel_lock;
|
|
static int wwan_add_ul_flt_rule_to_ipa(void);
|
|
static int wwan_del_ul_flt_rule_to_ipa(void);
|
|
|
|
@@ -1242,9 +1243,11 @@ static int ipa_wwan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
rmnet_mux_val.mux_id);
|
|
return rc;
|
|
}
|
|
+ mutex_lock(&add_mux_channel_lock);
|
|
if (rmnet_index >= MAX_NUM_OF_MUX_CHANNEL) {
|
|
IPAWANERR("Exceed mux_channel limit(%d)\n",
|
|
rmnet_index);
|
|
+ mutex_unlock(&add_mux_channel_lock);
|
|
return -EFAULT;
|
|
}
|
|
IPAWANDBG("ADD_MUX_CHANNEL(%d, name: %s)\n",
|
|
@@ -1270,6 +1273,7 @@ static int ipa_wwan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
IPAWANERR("device %s reg IPA failed\n",
|
|
extend_ioctl_data.u.
|
|
rmnet_mux_val.vchannel_name);
|
|
+ mutex_unlock(&add_mux_channel_lock);
|
|
return -ENODEV;
|
|
}
|
|
mux_channel[rmnet_index].mux_channel_set = true;
|
|
@@ -1282,6 +1286,7 @@ static int ipa_wwan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
mux_channel[rmnet_index].ul_flt_reg = false;
|
|
}
|
|
rmnet_index++;
|
|
+ mutex_unlock(&add_mux_channel_lock);
|
|
break;
|
|
case RMNET_IOCTL_SET_EGRESS_DATA_FORMAT:
|
|
IPAWANDBG("get RMNET_IOCTL_SET_EGRESS_DATA_FORMAT\n");
|
|
@@ -2050,7 +2055,7 @@ static int __init ipa_wwan_init(void)
|
|
|
|
atomic_set(&is_initialized, 0);
|
|
atomic_set(&is_ssr, 0);
|
|
-
|
|
+ mutex_init(&add_mux_channel_lock);
|
|
/* Register for Modem SSR */
|
|
subsys = subsys_notif_register_notifier(SUBSYS_MODEM, &ssr_notifier);
|
|
if (!IS_ERR(subsys))
|
|
@@ -2061,6 +2066,7 @@ static int __init ipa_wwan_init(void)
|
|
|
|
static void __exit ipa_wwan_cleanup(void)
|
|
{
|
|
+ mutex_destroy(&add_mux_channel_lock);
|
|
platform_driver_unregister(&rmnet_ipa_driver);
|
|
}
|
|
|
|
--
|
|
cgit v1.1
|
|
|