[PATCH v2 2/3] atmodem: sms: ensure buffer is initialized before use

["Sicelo A. Mhlongo" <absicsz@gmail.com>]

Fixes: CVE-2024-7540
Fixes: CVE-2024-7541
Fixes: CVE-2024-7542
---
 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
@@ -399,7 +399,7 @@ 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;
 
@@ -466,7 +466,7 @@ 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;
 
@@ -648,7 +648,7 @@ 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;
-- 
2.45.2