Fix CVE-2018-1000097:

https://security-tracker.debian.org/tracker/CVE-2018-1000097
https://nvd.nist.gov/vuln/detail/CVE-2018-1000097

Patch taken from upstream bug report:
https://lists.gnu.org/archive/html/bug-gnu-utils/2018-02/msg00005.html

diff --git a/src/unshar.c b/src/unshar.c
index 80bc3a9..0fc3773 100644
--- a/src/unshar.c
+++ b/src/unshar.c
@@ -240,7 +240,7 @@ find_archive (char const * name, FILE * file, off_t start)
       off_t position = ftello (file);
 
       /* Read next line, fail if no more and no previous process.  */
-      if (!fgets (rw_buffer, BUFSIZ, file))
+      if (!fgets (rw_buffer, rw_base_size, file))
 	{
 	  if (!start)
 	    error (0, 0, _("Found no shell commands in %s"), name);
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<tr><td><span title='2023-04-09 21:00:05 +0200'>2023-04-09</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=0cbbfc05bf2b22ee0f0fda23939a5e6b374022b5'>gnu: haproxy: Update to 2.7.6.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/high-availability.scm (haproxy): Update to 2.7.6.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Yovan Naumovski</td></tr>
<tr><td><span title='2023-03-26 23:28:02 +0200'>2023-03-26</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=c06b6ce2572410eb6b904d5ade219b5023143517'>gnu: haproxy: Move to (gnu packages high-availability).</a><span class='msg-avail'>...<span class='msg-tooltip'>Copyright records were synchronized based on commit history.

* gnu/packages/networking.scm (haproxy): Move this variable from here...
* gnu/packages/high-availability.scm (haproxy): ...to here.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>
<tr><td><span title='2022-10-10 11:16:08 +0200'>2022-10-10</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=5f856c595479c30d9ccdb0063c9124248fdcf5c2'>gnu: Add pacemaker.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/pacemaker/high-availability.scm (pacemaker): New variable.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>
<tr><td><span title='2022-10-10 11:16:08 +0200'>2022-10-10</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=be3bfce295e065c10ea43154d5c69546c2c24f97'>gnu: Add corosync.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/high-availability.scm (corosync): New variable.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>
<tr><td><span title='2022-10-10 11:16:08 +0200'>2022-10-10</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=b72e6036ddc6bf73f915f8898b49c067de833735'>gnu: Add kronosnet.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/high-availability.scm (kronosnet): New variable.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>
<tr><td><span title='2022-10-10 11:16:08 +0200'>2022-10-10</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=1589a825daf7d994a7236fdffdc5a2f98fe8cc38'>gnu: libqb: Update to 2.0.6.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/high-availability.scm (libqb): Update to 2.0.6.
  Run `guix style'  over the package.
  [native-inputs]: Add autoconf, automake, libtools to fix configure and
  build phases.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>
<tr><td><span title='2022-10-10 11:16:07 +0200'>2022-10-10</span></td><td><a href='/guix/commit/gnu/packages/high-availability.scm?id=69598d84893669b0089309b9e5d967231cae84fa'>gnu: Move libqb to high-availability.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/hardware.scm (libqb): Move to high-availability.scm.
* gnu/packages/high-availability.scm: New file.
* gnu/local.mk: Add high-availability.scm to GNU_SYSTEM_MODULES list.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sharlatan Hellseher</td></tr>