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  <a name=all></a>
  <li><h3><font color=#e00000>All architectures</font></h3>
  <ul>
+ <a name=zlib></a>
+ <li><font color=#009000><strong>022: RELIABILITY FIX: March 13, 2002</strong></font><br>
+ Under some circumstances the zlib compression library can free dynamically
+ allocated memory twice.  This is not a security issue on OpenBSD since the BSD
+ <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=free&sektion=3">free(3)</a>
+ function detects this.
+ There is also a kernel zlib component that may be used by pppd and IPSec.
+ The feasibility of attacking the kernel this way is currently unknown.
+ <a href="ftp://ftp.openbsd.org/pub/OpenBSD/patches/2.9/common/022_zlib.patch">A source code patch exists which remedies the problem</a>.
+ <p>
  <a name=openssh></a>
  <li><font color=#009000><strong>021: SECURITY FIX: March 8, 2002</strong></font>
  <br>
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