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45 lines
1.7 KiB
Diff
45 lines
1.7 KiB
Diff
From 2fca425d781572393fbe51abe2e27a932d24a768 Mon Sep 17 00:00:00 2001
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From: Skylar Chang <chiaweic@codeaurora.org>
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Date: Fri, 22 Jul 2016 15:03:16 -0700
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Subject: msm: ipa: handle information leak on ADD_FLT_RULE_INDEX ioctl
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IPA might have Information leak and device crash due to
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kernel heap overread in IPA driver when processing
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WAN_IOC_ADD_FLT_RULE_INDEX ioctl. The fix is to add
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check on max number of filter rules send to modem.
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Change-Id: I454e04d05cfcb7af8fc4bd2b4a1bade55c4684d0
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Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
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---
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drivers/platform/msm/ipa/ipa_qmi_service.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/drivers/platform/msm/ipa/ipa_qmi_service.c b/drivers/platform/msm/ipa/ipa_qmi_service.c
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index d68350a..58d7c181 100644
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--- a/drivers/platform/msm/ipa/ipa_qmi_service.c
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+++ b/drivers/platform/msm/ipa/ipa_qmi_service.c
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@@ -491,7 +491,7 @@ int qmi_filter_request_send(struct ipa_install_fltr_rule_req_msg_v01 *req)
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if (req->filter_spec_list_len == 0) {
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IPAWANDBG("IPACM pass zero rules to Q6\n");
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} else {
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- IPAWANDBG("IPACM pass %d rules to Q6\n",
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+ IPAWANDBG("IPACM pass %u rules to Q6\n",
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req->filter_spec_list_len);
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}
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@@ -622,6 +622,11 @@ int qmi_filter_notify_send(struct ipa_fltr_installed_notif_req_msg_v01 *req)
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IPAWANERR(" delete UL filter rule for pipe %d\n",
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req->source_pipe_index);
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return -EINVAL;
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+ } else if (req->filter_index_list_len > QMI_IPA_MAX_FILTERS_V01) {
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+ IPAWANERR(" UL filter rule for pipe %d exceed max (%u)\n",
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+ req->source_pipe_index,
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+ req->filter_index_list_len);
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+ return -EINVAL;
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} else if (req->filter_index_list[0].filter_index == 0 &&
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req->source_pipe_index !=
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ipa_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD)) {
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--
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cgit v1.1
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