main/libvorbis: fix for CVE-2017-14160

upstream issue: https://gitlab.xiph.org/xiph/vorbis/issues/2330

fixes #7937

2 files changed, 68 insertions, 3 deletions

diff --git a/main/libvorbis/APKBUILD b/main/libvorbis/APKBUILD
index 01794075a7..46528ec484 100644
--- a/main/libvorbis/APKBUILD
+++ b/main/libvorbis/APKBUILD
@@ -1,16 +1,22 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=libvorbis
 pkgver=1.3.5
-pkgrel=2
+pkgrel=3
 pkgdesc="Vorbis codec library"
 url="https://xiph.org/vorbis/"
 arch="all"
 license="custom"
 subpackages="$pkgname-dev $pkgname-doc"
 makedepends="libogg-dev"
-source="http://downloads.xiph.org/releases/vorbis/$pkgname-$pkgver.tar.gz"
+source="http://downloads.xiph.org/releases/vorbis/$pkgname-$pkgver.tar.gz
+        CVE-2017-14160.patch
+        "
 builddir="$srcdir/$pkgname-$pkgver"
 
+# secfixes:
+#   1.3.5-r3:
+#   - CVE-2017-14160
+
 build() {
         cd "$builddir"
 
@@ -28,4 +34,5 @@ package() {
         install -Dm644 COPYING "$pkgdir"/usr/share/licenses/$pkgname/COPYING
 }
 
-sha512sums="6c729a227143abc744a779ec4d4ce9932cd1234e301b766cb5111c3894b7cd866f0267590c7864afd3841ac0d4ae2eb2386e8d14345b7c41c8ce35e996e3656c  libvorbis-1.3.5.tar.gz"
+sha512sums="6c729a227143abc744a779ec4d4ce9932cd1234e301b766cb5111c3894b7cd866f0267590c7864afd3841ac0d4ae2eb2386e8d14345b7c41c8ce35e996e3656c  libvorbis-1.3.5.tar.gz
+4c2f7be947f2159ae47175cba89950c7b7d357b37a20d54382e4fbecd8c268b148e6cb86cb148945c7b68bbe8b14f466e910b35b80903ab51f1b02cfccf5806e  CVE-2017-14160.patch"
diff --git a/main/libvorbis/CVE-2017-14160.patch b/main/libvorbis/CVE-2017-14160.patch
new file mode 100644
index 0000000000..9ad9d18f75
--- /dev/null
+++ b/main/libvorbis/CVE-2017-14160.patch
@@ -0,0 +1,58 @@
+From 98a60969315dba8c1e8231f561e1551670bc80ae Mon Sep 17 00:00:00 2001
+Message-Id: <98a60969315dba8c1e8231f561e1551670bc80ae.1511192857.git.agx@sigxcpu.org>
+From: =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
+Date: Wed, 15 Nov 2017 13:12:00 +0100
+Subject: [PATCH] CVE-2017-14160: make sure we don't overflow
+
+---
+ lib/psy.c | 9 ++++-----
+ 1 file changed, 4 insertions(+), 5 deletions(-)
+
+diff --git a/lib/psy.c b/lib/psy.c
+index 422c6f1e..8bbf6cf3 100644
+--- a/lib/psy.c
++++ b/lib/psy.c
+@@ -599,7 +599,7 @@ static void bark_noise_hybridmp(int n,const long *b,
+     XY[i] = tXY;
+   }
+ 
+-  for (i = 0, x = 0.f;; i++, x += 1.f) {
++  for (i = 0, x = 0.f; i < n; i++, x += 1.f) {
+ 
+     lo = b[i] >> 16;
+     if( lo>=0 ) break;
+@@ -621,12 +621,11 @@ static void bark_noise_hybridmp(int n,const long *b,
+     noise[i] = R - offset;
+   }
+ 
+-  for ( ;; i++, x += 1.f) {
++  for ( ; i < n; i++, x += 1.f) {
+ 
+     lo = b[i] >> 16;
+     hi = b[i] & 0xffff;
+     if(hi>=n)break;
+-
+     tN = N[hi] - N[lo];
+     tX = X[hi] - X[lo];
+     tXX = XX[hi] - XX[lo];
+@@ -651,7 +650,7 @@ static void bark_noise_hybridmp(int n,const long *b,
+ 
+   if (fixed <= 0) return;
+ 
+-  for (i = 0, x = 0.f;; i++, x += 1.f) {
++  for (i = 0, x = 0.f; i < n; i++, x += 1.f) {
+     hi = i + fixed / 2;
+     lo = hi - fixed;
+     if(lo>=0)break;
+@@ -670,7 +669,7 @@ static void bark_noise_hybridmp(int n,const long *b,
+ 
+     if (R - offset < noise[i]) noise[i] = R - offset;
+   }
+-  for ( ;; i++, x += 1.f) {
++  for ( ; i < n; i++, x += 1.f) {
+ 
+     hi = i + fixed / 2;
+     lo = hi - fixed;
+-- 
+2.15.0
+