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40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
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From 069683407ca9a820d05c914b57c587bcd3f16a3a Mon Sep 17 00:00:00 2001
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From: David Dai <daidavid1@codeaurora.org>
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Date: Fri, 5 Aug 2016 15:14:25 -0700
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Subject: msm: msm_bus: limit max chars read by sscanf
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Current bus_floor_vote_store_api does not limit/check
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the size of the string in input, allowing stack overflow.
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Specify the max number of characters read allowable to
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the size of destination buffer.
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CRs-Fixed: 1050455
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Change-Id: Ia9227480be6ea4f3ade71f5675f95a3efd9fcf99
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Signed-off-by: David Dai <daidavid1@codeaurora.org>
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---
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drivers/platform/msm/msm_bus/msm_bus_dbg_voter.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/drivers/platform/msm/msm_bus/msm_bus_dbg_voter.c b/drivers/platform/msm/msm_bus/msm_bus_dbg_voter.c
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index e4c8f1f..a876484 100644
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--- a/drivers/platform/msm/msm_bus/msm_bus_dbg_voter.c
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+++ b/drivers/platform/msm/msm_bus/msm_bus_dbg_voter.c
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
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*
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* This program is Mree software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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@@ -133,7 +133,7 @@ static ssize_t bus_floor_vote_store_api(struct device *dev,
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return 0;
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}
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- if (sscanf(buf, "%s %llu", name, &vote_khz) != 2) {
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+ if (sscanf(buf, "%9s %llu", name, &vote_khz) != 2) {
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pr_err("%s:return error", __func__);
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return -EINVAL;
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}
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--
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cgit v1.1
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