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38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From 1e2b69bf3ab61979a05e796e76c8ecd1ec251c42 Mon Sep 17 00:00:00 2001
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From: Dennis Cagle <d-cagle@codeaurora.org>
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Date: Thu, 5 Jan 2017 17:22:13 -0800
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Subject: [PATCH] input: misc: fix heap overflow issue in hbtp_input.c
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Add the boundary check for ABS code before setting ABS params,
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to avoid heap overflow.
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Bug: 32341680
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CRs-fixed: 1096301
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Change-Id: I6aad9916c92d2f775632406374dbb803063148de
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Signed-off-by: Vevek Venkatesan <vevekv@codeaurora.org>
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Signed-off-by: Dennis Cagle <d-cagle@codeaurora.org>
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---
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drivers/input/misc/hbtp_input.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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diff --git a/drivers/input/misc/hbtp_input.c b/drivers/input/misc/hbtp_input.c
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index ef17d386644c9..7877e9b9f5162 100644
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--- a/drivers/input/misc/hbtp_input.c
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+++ b/drivers/input/misc/hbtp_input.c
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@@ -129,9 +129,13 @@ static int hbtp_input_create_input_dev(struct hbtp_input_absinfo *absinfo)
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input_mt_init_slots(input_dev, HBTP_MAX_FINGER, 0);
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for (i = 0; i <= ABS_MT_LAST - ABS_MT_FIRST; i++) {
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abs = absinfo + i;
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- if (abs->active)
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- input_set_abs_params(input_dev, abs->code,
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+ if (abs->active) {
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+ if (abs->code >= 0 && abs->code < ABS_CNT)
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+ input_set_abs_params(input_dev, abs->code,
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abs->minimum, abs->maximum, 0, 0);
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+ else
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+ pr_err("%s: ABS code out of bound\n", __func__);
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+ }
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}
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error = input_register_device(input_dev);
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