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) {
irass?showmsg=1'>log</a><a href='/guix/tree/build-aux/cuirass?id=d102bd7316bc2f8fe973987eac13975ac429d50f'>tree</a><a href='/guix/commit/build-aux/cuirass?id=d102bd7316bc2f8fe973987eac13975ac429d50f'>commit</a><a href='/guix/diff/build-aux/cuirass?id=d102bd7316bc2f8fe973987eac13975ac429d50f'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/build-aux/cuirass'>
<input type='hidden' name='id' value='d102bd7316bc2f8fe973987eac13975ac429d50f'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=d102bd7316bc2f8fe973987eac13975ac429d50f&amp;showmsg=1'>root</a>/<a href='/guix/log/build-aux?id=d102bd7316bc2f8fe973987eac13975ac429d50f&amp;showmsg=1'>build-aux</a>/<a href='/guix/log/build-aux/cuirass?id=d102bd7316b<tr><td><span title='2015-07-19 21:49:58 +0200'>2015-07-19</span></td><td><a href='/guix/commit/AUTHORS?id=a5b2570a1c10f1fbdcbbc173378ce0bdb090250d'>AUTHORS: Remove the hand-made list of people.</a><span class='msg-avail'>...<span class='msg-tooltip'>* AUTHORS: Remove the list of people, and add a note saying that this f<tr class='logheader'><td><span title='2021-03-10 19:41:15 +0100'>2021-03-10</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=33bb89c939aee88bd211964db600df65d1b656af'>ci: Remove hydra support.</a></td><td>Mathieu Othacehe</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
This removes hydra support to use Cuirass as the only continuous integration
system.

* build-aux/hydra/gnu-system.scm: Remove it.
* build-aux/hydra/guix-modular.scm: Ditto.
* build-aux/hydra/guix.scm: Ditto.
* build-aux/cuirass/hydra-to-cuirass.scm: Ditto.
* Makefile.am (EXTRA_DIST): Update it.
(hydra-jobs.scm): Remove it.
(cuirass-jobs.scm): Update it.
* build-aux/hydra/evaluate.scm: Move it to ...
* build-aux/cuirass/evaluate.scm: ... here.
* build-aux/cuirass/guix-modular.scm: Remove it.
* build-aux/cuirass/gnu-system.scm: Ditto.
* guix/packages.scm (%hydra-supported-systems): Rename it to ...
(%cuirass-supported-systems): ... this variable.
* build-aux/check-final-inputs-self-contained: Adapt it.
* etc/release-manifest.scm: Ditto.
* gnu/ci.scm (package-&gt;alist): Remove it.
(derivation-&gt;job): New procedure.
(package-job, package-cross-job, cross-jobs, image-jobs, system-test-jobs,
tarball-jobs): Use it.
(guix-jobs): New procedure.
(hydra-jobs): Rename it to ...
(cuirass-jobs): ... this procedure.


</td></tr>
<tr class='logheader'><td><span title='2020-10-04 14:04:14 +0200'>2020-10-04</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=fdbf8a7a75e9d63957ea6d8a63181aa131edeaea'>cuirass: Add hurd-manifest.</a></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* build-aux/cuirass/hurd-manifest.scm: New file.


</td></tr>
<tr class='logheader'><td><span title='2018-04-08 17:48:33 +0200'>2018-04-08</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=351f384e57939005b25fa976952e3a0e08785893'>cuirass: Add job specs for the modular Guix.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* build-aux/cuirass/guix-modular.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.


</td></tr>
<tr class='logheader'><td><span title='2018-04-08 17:48:33 +0200'>2018-04-08</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=a1ec7540be9b30593f5e83e36a0e83b1bcf337f1'>cuirass: Factorize hydra-to-cuirass CI job translation.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* build-aux/cuirass/gnu-system.scm: Move code to...
* build-aux/cuirass/hydra-to-cuirass.scm: ... here, and include it.
* Makefile.am (EXTRA_DIST): Add 'build-aux/cuirass/hydra-to-cuirass.scm'
and 'build-aux/cuirass/gnu-system.scm'.


</td></tr>
<tr class='logheader'><td><span title='2018-01-15 15:18:03 +0100'>2018-01-15</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=403f2dccfcf992573ceeeae7c76c71b4884d3cd4'>cuirass: Properly convert list of &lt;license&gt; objects.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes a bug whereby we would 'write' raw &lt;license&gt; objects when they
were in a list.

* build-aux/cuirass/gnu-system.scm (entry-&gt;sexp-entry): Add recursive
case when O is a list.


</td></tr>
<tr class='logheader'><td><span title='2017-09-27 22:19:28 +0200'>2017-09-27</span></td><td class='logsubject'><a href='/guix/commit/build-aux/cuirass?id=66bc1d2aaf74fc7eb4ef9b3519c69bd37142ffb3'>cuirass: Add gnu-system build spec.</a></td><td>Jan Nieuwenhuizen</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* build-aux/hydra/gnu-system.scm (hydra-jobs): Support subset "hello".
* build-aux/cuirass/gnu-system.scm: New file.
* doc/guix.texi (Continuous Integration): Update example spec.


</td></tr>