gnu: wavpack: Fix CVE-2018-7253 and CVE-2018-7254.

* gnu/packages/patches/wavpack-CVE-2018-7253.patch,
gnu/packages/patches/wavpack-CVE-2018-7254.patch: New files.
* gnu/local.mk (dist_patch_DATA): Register them.
* gnu/packages/audio.scm (wavpack)[source](patches): Use them.

gnu/local.mk

@@ -1140,6 +1140,8 @@ dist_patch_DATA =						\
   %D%/packages/patches/vsearch-unbundle-cityhash.patch		\
   %D%/packages/patches/vte-CVE-2012-2738-pt1.patch			\
   %D%/packages/patches/vte-CVE-2012-2738-pt2.patch			\
+  %D%/packages/patches/wavpack-CVE-2018-7253.patch		\
+  %D%/packages/patches/wavpack-CVE-2018-7254.patch		\
   %D%/packages/patches/weechat-python.patch			\
   %D%/packages/patches/wicd-bitrate-none-fix.patch		\
   %D%/packages/patches/wicd-get-selected-profile-fix.patch	\

gnu/packages/audio.scm

@@ -2377,6 +2377,8 @@ stretching and pitch scaling of audio.  This package contains the library.")
               (method url-fetch)
               (uri (string-append "http://www.wavpack.com/"
                                   name "-" version ".tar.bz2"))
+              (patches (search-patches "wavpack-CVE-2018-7253.patch"
+                                       "wavpack-CVE-2018-7254.patch"))
               (sha256
                (base32
                 "0i19c6krc0p9krwrqy9s5xahaafigqzxcn31piidmlaqadyn4f8r"))))

gnu/packages/patches/wavpack-CVE-2018-7253.patch

@@ -0,0 +1,29 @@
+Fix CVE-2018-7253:
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7253
+
+Copied from upstream:
+https://github.com/dbry/WavPack/commit/36a24c7881427d2e1e4dc1cef58f19eee0d13aec
+
+diff --git a/cli/dsdiff.c b/cli/dsdiff.c
+index 410dc1c..c016df9 100644
+--- a/cli/dsdiff.c
++++ b/cli/dsdiff.c
+@@ -153,7 +153,17 @@ int ParseDsdiffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpa
+                 error_line ("dsdiff file version = 0x%08x", version);
+         }
+         else if (!strncmp (dff_chunk_header.ckID, "PROP", 4)) {
+-            char *prop_chunk = malloc ((size_t) dff_chunk_header.ckDataSize);
++            char *prop_chunk;
++
++            if (dff_chunk_header.ckDataSize < 4 || dff_chunk_header.ckDataSize > 1024) {
++                error_line ("%s is not a valid .DFF file!", infilename);
++                return WAVPACK_SOFT_ERROR;
++            }
++
++            if (debug_logging_mode)
++                error_line ("got PROP chunk of %d bytes total", (int) dff_chunk_header.ckDataSize);
++
++            prop_chunk = malloc ((size_t) dff_chunk_header.ckDataSize);
+ 
+             if (!DoReadFile (infile, prop_chunk, (uint32_t) dff_chunk_header.ckDataSize, &bcount) ||
+                 bcount != dff_chunk_header.ckDataSize) {

gnu/packages/patches/wavpack-CVE-2018-7254.patch

@@ -0,0 +1,62 @@
+Fix CVE-2018-7254:
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7254
+
+Copied from upstream:
+https://github.com/dbry/WavPack/commit/8e3fe45a7bac31d9a3b558ae0079e2d92a04799e
+
+diff --git a/cli/caff.c b/cli/caff.c
+index ae57c4b..6248a71 100644
+--- a/cli/caff.c
++++ b/cli/caff.c
+@@ -89,8 +89,8 @@ typedef struct
+ 
+ #define CAFChannelDescriptionFormat "LLLLL"
+ 
+-static const char TMH_full [] = { 1,2,3,13,9,10,5,6,12,14,15,16,17,9,4,18,7,8,19,20,21 };
+-static const char TMH_std [] = { 1,2,3,11,8,9,5,6,10,12,13,14,15,7,4,16 };
++static const char TMH_full [] = { 1,2,3,13,9,10,5,6,12,14,15,16,17,9,4,18,7,8,19,20,21,0 };
++static const char TMH_std [] = { 1,2,3,11,8,9,5,6,10,12,13,14,15,7,4,16,0 };
+ 
+ static struct {
+     uint32_t mChannelLayoutTag;     // Core Audio layout, 100 - 146 in high word, num channels in low word
+@@ -274,10 +274,19 @@ int ParseCaffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpack
+             }
+         }
+         else if (!strncmp (caf_chunk_header.mChunkType, "chan", 4)) {
+-            CAFChannelLayout *caf_channel_layout = malloc ((size_t) caf_chunk_header.mChunkSize);
++            CAFChannelLayout *caf_channel_layout;
+ 
+-            if (caf_chunk_header.mChunkSize < sizeof (CAFChannelLayout) ||
+-                !DoReadFile (infile, caf_channel_layout, (uint32_t) caf_chunk_header.mChunkSize, &bcount) ||
++            if (caf_chunk_header.mChunkSize < sizeof (CAFChannelLayout) || caf_chunk_header.mChunkSize > 1024) {
++                error_line ("this .CAF file has an invalid 'chan' chunk!");
++                return WAVPACK_SOFT_ERROR;
++            }
++
++            if (debug_logging_mode)
++                error_line ("'chan' chunk is %d bytes", (int) caf_chunk_header.mChunkSize);
++
++            caf_channel_layout = malloc ((size_t) caf_chunk_header.mChunkSize);
++
++            if (!DoReadFile (infile, caf_channel_layout, (uint32_t) caf_chunk_header.mChunkSize, &bcount) ||
+                 bcount != caf_chunk_header.mChunkSize) {
+                     error_line ("%s is not a valid .CAF file!", infilename);
+                     free (caf_channel_layout);
+@@ -495,8 +504,15 @@ int ParseCaffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpack
+         }
+         else {          // just copy unknown chunks to output file
+ 
+-            int bytes_to_copy = (uint32_t) caf_chunk_header.mChunkSize;
+-            char *buff = malloc (bytes_to_copy);
++            uint32_t bytes_to_copy = (uint32_t) caf_chunk_header.mChunkSize;
++            char *buff;
++
++            if (caf_chunk_header.mChunkSize < 0 || caf_chunk_header.mChunkSize > 1048576) {
++                error_line ("%s is not a valid .CAF file!", infilename);
++                return WAVPACK_SOFT_ERROR;
++            }
++
++            buff = malloc (bytes_to_copy);
+ 
+             if (debug_logging_mode)
+                 error_line ("extra unknown chunk \"%c%c%c%c\" of %d bytes",