File 0003-btmon-fix-segfault-caused-by-buffer-over-read.patch of Package bluez.25899

From 5ceef2cbde0b4407e61dc2370780bda895c8019c Mon Sep 17 00:00:00 2001
From: Matias Karhumaa <matias.karhumaa@gmail.com>
Date: Tue, 16 Oct 2018 23:20:40 +0300
Subject: [PATCH 03/13] btmon: fix segfault caused by buffer over-read

Fix segfault caused by buffer over-read in packet_hci_scodata function
of monitor/packet.c.

Fix is to check that index is not bigger than MAX_INDEX.

This bug was found by fuzzing with AFL.
---
 monitor/packet.c | 5 +++++
 1 file changed, 5 insertions(+)

Index: bluez-5.48/monitor/packet.c
===================================================================
--- bluez-5.48.orig/monitor/packet.c
+++ bluez-5.48/monitor/packet.c
@@ -10283,6 +10283,11 @@ void packet_hci_scodata(struct timeval *
 	uint8_t flags = acl_flags(handle);
 	char handle_str[16], extra_str[32];
 
+	if (index > MAX_INDEX) {
+		print_field("Invalid index (%d).", index);
+		return;
+	}
+
 	index_list[index].frame++;
 
 	if (size < HCI_SCO_HDR_SIZE) {