From fde6d79fb8363c4a329a184ef0b107156602b225 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Thu, 27 Sep 2018 10:48:45 +0200
Subject: [PATCH] ModuleState: handle compress/decompress init failure

When the unit initcompress or initdecompress function fails,
m_fileModule is NULL. Return AF_FAIL in that case instead of
causing NULL pointer dereferences later.

Fixes #49

This patch has been backported from Debian:
https://sources.debian.org/src/audiofile/0.3.6-7/debian/patches/11_CVE-2018-13440.patch

CVE: CVE-2018-13440
Upstream-Status: Inactive-Upstream [lastcommit: 2016-Aug-30]
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

---
 libaudiofile/modules/ModuleState.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libaudiofile/modules/ModuleState.cpp b/libaudiofile/modules/ModuleState.cpp
index 0c29d7a..070fd9b 100644
--- a/libaudiofile/modules/ModuleState.cpp
+++ b/libaudiofile/modules/ModuleState.cpp
@@ -75,6 +75,9 @@ status ModuleState::initFileModule(AFfilehandle file, Track *track)
 		m_fileModule = unit->initcompress(track, file->m_fh, file->m_seekok,
 			file->m_fileFormat == AF_FILE_RAWDATA, &chunkFrames);
 
+	if (!m_fileModule)
+		return AF_FAIL;
+
 	if (unit->needsRebuffer)
 	{
 		assert(unit->nativeSampleFormat == AF_SAMPFMT_TWOSCOMP);
