sox: patch CVE-2017-18189

Details: https://nvd.nist.gov/vuln/detail/CVE-2017-18189

Pick the patch that was identified by Debian[1] as the solution.

[1]: https://security-tracker.debian.org/tracker/CVE-2017-18189

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>

meta-multimedia/recipes-multimedia/sox/sox/CVE-2017-18189.patch

@@ -0,0 +1,34 @@
+From c9e266bc77952c873a28ae320dac2eae5cbc9934 Mon Sep 17 00:00:00 2001
+From: Mans Rullgard <mans@mansr.com>
+Date: Thu, 9 Nov 2017 11:45:10 +0000
+Subject: [PATCH] xa: validate channel count
+
+A corrupt header specifying zero channels would send read_channels()
+into an infinite loop.  Prevent this by sanity checking the channel
+count in open_read().  Also add an upper bound to prevent overflow
+in multiplication.
+
+CVE: CVE-2017-18189
+Upstream-Status: Backport [https://github.com/mansr/sox/commit/7a8ceb86212b28243bbb6d0de636f0dfbe833e53]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ src/xa.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/src/xa.c b/src/xa.c
+index 81a7677..9fc086e 100644
+--- a/src/xa.c
++++ b/src/xa.c
+@@ -143,6 +143,12 @@ static int startread(sox_format_t * ft)
+         lsx_report("User options overriding rate read in .xa header");
+     }
+ 
++    if (ft->signal.channels == 0 || ft->signal.channels > UINT16_MAX) {
++        lsx_fail_errno(ft, SOX_EFMT, "invalid channel count %d",
++                       ft->signal.channels);
++        return SOX_EOF;
++    }
++
+     /* Check for supported formats */
+     if (ft->encoding.bits_per_sample != 16) {
+         lsx_fail_errno(ft, SOX_EFMT, "%d-bit sample resolution not supported.",

meta-multimedia/recipes-multimedia/sox/sox_14.4.2.bb

@@ -37,6 +37,7 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/sox/sox-${PV}.tar.gz \
            file://CVE-2017-15371.patch \
            file://CVE-2017-15372.patch \
            file://CVE-2017-15642.patch \
+           file://CVE-2017-18189.patch \
            "
 SRC_URI[md5sum] = "d04fba2d9245e661f245de0577f48a33"
 SRC_URI[sha256sum] = "b45f598643ffbd8e363ff24d61166ccec4836fea6d3888881b8df53e3bb55f6c"