From 29ff6334b492504ace101be748b256e6953d2c2f Mon Sep 17 00:00:00 2001
From: "Sicelo A. Mhlongo" <absicsz@gmail.com>
Date: Tue, 17 Dec 2024 11:31:28 +0200
Subject: [PATCH] atmodem: sms: ensure buffer is initialized before use

Fixes: CVE-2024-7540
Fixes: CVE-2024-7541
Fixes: CVE-2024-7542

CVE: CVE-2024-7540
CVE: CVE-2024-7541
CVE: CVE-2024-7542
Upstream-Status: Backport [https://git.kernel.org/pub/scm/network/ofono/ofono.git/commit/?id=29ff6334b492504ace101be748b256e6953d2c2f]
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 drivers/atmodem/sms.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/atmodem/sms.c b/drivers/atmodem/sms.c
index d994856b..0668c631 100644
--- a/drivers/atmodem/sms.c
+++ b/drivers/atmodem/sms.c
@@ -412,7 +412,7 @@ static void at_cmt_notify(GAtResult *result, gpointer user_data)
 	struct sms_data *data = ofono_sms_get_data(sms);
 	GAtResultIter iter;
 	const char *hexpdu;
-	unsigned char pdu[176];
+	unsigned char pdu[176] = {0};
 	long pdu_len;
 	int tpdu_len;
 
@@ -479,7 +479,7 @@ static void at_cmgr_notify(GAtResult *result, gpointer user_data)
 	struct sms_data *data = ofono_sms_get_data(sms);
 	GAtResultIter iter;
 	const char *hexpdu;
-	unsigned char pdu[176];
+	unsigned char pdu[176] = {0};
 	long pdu_len;
 	int tpdu_len;
 
@@ -661,7 +661,7 @@ static void at_cmgl_notify(GAtResult *result, gpointer user_data)
 	struct sms_data *data = ofono_sms_get_data(sms);
 	GAtResultIter iter;
 	const char *hexpdu;
-	unsigned char pdu[176];
+	unsigned char pdu[176] = {0};
 	long pdu_len;
 	int tpdu_len;
 	int index;
-- 
2.30.2

