Copied from Debian.

From: Kamil Dudka <kdudka@redhat.com>
Date: Mon, 14 Sep 2015 18:24:56 +0200
Subject: fix infinite loop when extracting empty bzip2 data
Bug-Debian: https://bugs.debian.org/802160
Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1260944
Origin: other, https://bugzilla.redhat.com/attachment.cgi?id=1073339

---
 extract.c | 6 ++++++
 1 file changed, 6 insertions(+)

--- a/extract.c
+++ b/extract.c
@@ -2728,6 +2728,12 @@
     int repeated_buf_err;
     bz_stream bstrm;
 
+    if (G.incnt <= 0 && G.csize <= 0L) {
+        /* avoid an infinite loop */
+        Trace((stderr, "UZbunzip2() got empty input\n"));
+        return 2;
+    }
+
 #if (defined(DLL) && !defined(NO_SLIDE_REDIR))
     if (G.redirect_slide)
         wsize = G.redirect_size, redirSlide = G.redirect_buffer;
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<div class='path'>path: <a href='/guix/log/?id=33783d9009cb6f5b9cfa433822037e28ca9c9a00'>root</a>/<a href='/guix/log/gnu?id=33783d9009cb6f5b9cfa433822037e28ca9c9a00'>gnu</a>/<a href='/guix/log/gnu/services?id=33783d9009cb6f5b9cfa433822037e28ca9c9a00'>services</a>/<a href='/guix/log/gnu/services/ganeti.scm?id=33783d9009cb6f5b9cfa433822037e28ca9c9a00'>ganeti.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/ganeti.scm?id=33783d9009cb6f5b9cfa433822037e28ca9c9a00&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-10-28 21:10:54 -0700'>2020-10-28</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=7db4dc60045082b79ea288573d8492a6e5d5903c'>gnu: ganeti-luxid-service-type: Fix typo.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti (ganeti-luxid-service-type)[description]: Fix spelling
  of "authoritative".
</span></span></td><td>Vagrant Cascadian</td></tr>
<tr><td><span title='2020-10-10 23:39:17 +0200'>2020-10-10</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=d7fb4199c770c3bd7ce755b1160aa19e9164f148'>services: ganeti: Fix typo.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti.scm (ganeti-luxid-service-type)[description]: Fix typo.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-08-25 17:14:50 +0200'>2020-08-25</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=2e832d4b8a1c68a9f28d5953819954ee37d9800f'>services: ganeti-kvmd-service-type: Fix typo in description.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti.scm (ganeti-kvmd-service-type)[description]:
Fix typo.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-07-21 23:54:44 +0200'>2020-07-21</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=938f3190e786baab4116ea826bde21d102396cc2'>services: ganeti: Fix erroneous gexp.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti.scm (ganeti-watcher-command): Add missing parens.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-07-19 14:23:16 +0200'>2020-07-19</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=41daf1286575f3a1998493c893f6d5a9c5b62de8'>services: ganeti: Use TLS on the remote API by default.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti.scm (&lt;ganeti-rapi-configuration&gt;): Set SSL? to #t.
* gnu/tests/ganeti.scm (%ganeti-os): Set SSL? to #f.
* doc/guix.texi (Virtualization Services): Adjust accordingly.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-07-16 21:51:44 +0200'>2020-07-16</span></td><td><a href='/guix/commit/gnu/services/ganeti.scm?id=9a622827559b223cc6b48733a82c74ce14a29bab'>services: Add ganeti.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ganeti.scm, gnu/tests/ganeti.scm: New files.
* doc/guix.texi (Virtualization Services): Document the Ganeti services.
</span></span></td><td>Marius Bakke</td></tr>