diff --git a/gnu/local.mk b/gnu/local.mk
index 60dbb7faf3..00acfbccf6 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -766,6 +766,8 @@ dist_patch_DATA =						\
   %D%/packages/patches/util-linux-tests.patch			\
   %D%/packages/patches/upower-builddir.patch			\
   %D%/packages/patches/valgrind-enable-arm.patch		\
+  %D%/packages/patches/vorbis-tools-CVE-2014-9638+CVE-2014-9639.patch		\
+  %D%/packages/patches/vorbis-tools-CVE-2014-9640.patch		\
   %D%/packages/patches/vorbis-tools-CVE-2015-6749.patch		\
   %D%/packages/patches/vpnc-script.patch			\
   %D%/packages/patches/vtk-mesa-10.patch			\
diff --git a/gnu/packages/patches/vorbis-tools-CVE-2014-9638+CVE-2014-9639.patch b/gnu/packages/patches/vorbis-tools-CVE-2014-9638+CVE-2014-9639.patch
new file mode 100644
index 0000000000..6e389dd59e
--- /dev/null
+++ b/gnu/packages/patches/vorbis-tools-CVE-2014-9638+CVE-2014-9639.patch
@@ -0,0 +1,83 @@
+From: Petter Reinholdtsen <pere@debian.org>
+Date: Tue, 22 Sep 2015 15:14:06 +0200
+Subject: oggenc: validate count of channels in the header (CVE-2014-9638 &
+ CVE-2014-9639)
+
+Author: Kamil Dudka <kdudka@redhat.com>
+Origin: http://lists.xiph.org/pipermail/vorbis-dev/2015-February/020423.html
+Bug: https://trac.xiph.org/ticket/2136
+Bug: https://trac.xiph.org/ticket/2137
+Bug-Debian: https://bugs.debian.org/776086
+Forwarded: not-needed
+Reviewed-By: Petter Reinholdtsen <pere@hungry.com>
+Last-Update: 2015-09-22
+---
+ oggenc/audio.c | 18 ++++++++++++++++--
+ 1 file changed, 16 insertions(+), 2 deletions(-)
+
+diff --git a/oggenc/audio.c b/oggenc/audio.c
+index 05e42b3..1b3f179 100644
+--- a/oggenc/audio.c
++++ b/oggenc/audio.c
+@@ -13,6 +13,7 @@
+ #include <config.h>
+ #endif
+ 
++#include <limits.h>
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <string.h>
+@@ -251,6 +252,7 @@ int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
+     aiff_fmt format;
+     aifffile *aiff = malloc(sizeof(aifffile));
+     int i;
++    long channels;
+ 
+     if(buf[11]=='C')
+         aifc=1;
+@@ -277,11 +279,16 @@ int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
+         return 0;
+     }
+ 
+-    format.channels = READ_U16_BE(buffer);
++    format.channels = channels = READ_U16_BE(buffer);
+     format.totalframes = READ_U32_BE(buffer+2);
+     format.samplesize = READ_U16_BE(buffer+6);
+     format.rate = (int)read_IEEE80(buffer+8);
+ 
++    if(channels <= 0L || SHRT_MAX < channels)
++    {
++        fprintf(stderr, _("Warning: Unsupported count of channels in AIFF header\n"));
++        return 0;
++    }
+     aiff->bigendian = 1;
+ 
+     if(aifc)
+@@ -412,6 +419,7 @@ int wav_open(FILE *in, oe_enc_opt *opt, unsigned char *oldbuf, int buflen)
+     wav_fmt format;
+     wavfile *wav = malloc(sizeof(wavfile));
+     int i;
++    long channels;
+ 
+     /* Ok. At this point, we know we have a WAV file. Now we have to detect
+      * whether we support the subtype, and we have to find the actual data
+@@ -449,12 +457,18 @@ int wav_open(FILE *in, oe_enc_opt *opt, unsigned char *oldbuf, int buflen)
+     }
+ 
+     format.format =      READ_U16_LE(buf);
+-    format.channels =    READ_U16_LE(buf+2);
++    format.channels = channels = READ_U16_LE(buf+2);
+     format.samplerate =  READ_U32_LE(buf+4);
+     format.bytespersec = READ_U32_LE(buf+8);
+     format.align =       READ_U16_LE(buf+12);
+     format.samplesize =  READ_U16_LE(buf+14);
+ 
++    if(channels <= 0L || SHRT_MAX < channels)
++    {
++        fprintf(stderr, _("Warning: Unsupported count of channels in WAV header\n"));
++        return 0;
++    }
++
+     if(format.format == -2) /* WAVE_FORMAT_EXTENSIBLE */
+     {
+       if(len<40)
diff --git a/gnu/packages/patches/vorbis-tools-CVE-2014-9640.patch b/gnu/packages/patches/vorbis-tools-CVE-2014-9640.patch
new file mode 100644
index 0000000000..97d18e0db7
--- /dev/null
+++ b/gnu/packages/patches/vorbis-tools-CVE-2014-9640.patch
@@ -0,0 +1,29 @@
+Index: vorbis-tools/oggenc/oggenc.c
+===================================================================
+--- vorbis-tools/oggenc/oggenc.c	(revision 19116)
++++ vorbis-tools/oggenc/oggenc.c	(revision 19117)
+@@ -98,4 +98,6 @@
+               0,0,0.f,
+               0, 0, 0, 0, 0};
++    input_format raw_format = {NULL, 0, raw_open, wav_close, "raw", 
++      N_("RAW file reader")};
+ 
+     int i;
+@@ -240,6 +242,4 @@
+         if(opt.rawmode)
+         {
+-            input_format raw_format = {NULL, 0, raw_open, wav_close, "raw", 
+-                N_("RAW file reader")};
+ 
+             enc_opts.rate=opt.raw_samplerate;
+Index: vorbis-tools/oggenc/skeleton.h
+===================================================================
+--- vorbis-tools/oggenc/skeleton.h	(revision 19116)
++++ vorbis-tools/oggenc/skeleton.h	(revision 19117)
+@@ -42,5 +42,5 @@
+     ogg_int64_t start_granule;                             /* start granule value */
+     ogg_uint32_t preroll;                                   /* preroll */
+-    unsigned char granule_shift; // a 8-bit field           /* 1 byte value holding the granule shift */
++    unsigned char granule_shift;                            /* 1 byte value holding the granule shift */
+     char *message_header_fields;                            /* holds all the message header fields */
+     /* current total size of the message header fields, for realloc purpose, initially zero */
diff --git a/gnu/packages/xiph.scm b/gnu/packages/xiph.scm
index 68f76d5c5c..d1597e96ea 100644
--- a/gnu/packages/xiph.scm
+++ b/gnu/packages/xiph.scm
@@ -270,7 +270,10 @@ Kate stream.")
             (sha256
              (base32
               "1g12bnh5ah08v529y72kfdz5lhvy75iaz7f9jskyby23m9dkk2d3"))
-            (patches (search-patches "vorbis-tools-CVE-2015-6749.patch"))))
+            (patches (search-patches 
+                       "vorbis-tools-CVE-2014-9638+CVE-2014-9639.patch"
+                       "vorbis-tools-CVE-2014-9640.patch"
+                       "vorbis-tools-CVE-2015-6749.patch"))))
    (build-system gnu-build-system)
    (inputs `(("ao" ,ao)
              ("curl" ,curl)