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  <ul>
  
! <li id="p023_altivec">
! <strong>023: STABILITY FIX: April 26, 2007</strong>
! &nbsp; <i>PowerPC</i><br>
! An unhandled AltiVec assist exception can cause a kernel panic.<br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/macppc/023_altivec.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="p022_route6">
! <strong>022: SECURITY FIX: April 23, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! IPv6 type 0 route headers can be used to mount a DoS attack against
! hosts and networks.  This is a design flaw in IPv6 and not a bug in
! OpenBSD.<br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/022_route6.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="p021_xorg">
! <strong>021: SECURITY FIX: April 4, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! Multiple vulnerabilities have been discovered in X.Org.<br>
! XC-MISC extension ProcXCMiscGetXIDList memory corruption vulnerability,
! BDFFont parsing integer overflow vulnerability,
! fonts.dir file parsing integer overflow vulnerability,
! multiple integer overflows in the XGetPixel() and XInitImage functions
! in ImUtil.c.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003">CVE-2007-1003</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351">CVE-2007-1351</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352">CVE-2007-1352</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1667">CVE-2007-1667</a>.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/021_xorg.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="m_dup1">
! <strong>020: SECURITY FIX: March 7, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! <b>2nd revision, March 17, 2007</b><br>
! Incorrect mbuf handling for ICMP6 packets.<br>
! Using
! <a href="https://man.openbsd.org/OpenBSD-3.9/pf.4">pf(4)</a>
! to avoid the problem packets is an effective workaround until the patch
! can be installed.<br>
! Use "block in inet6" in /etc/pf.conf
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/020_m_dup1.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="timezone">
! <strong>019: INTEROPERABILITY FIX: February 4, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! A US daylight saving time rules change takes effect in 2007.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/019_timezone.patch">
! A source code patch exists which syncs the timezone data files with tzdata2007a</a>.<br>
  <p>
  
! <li id="icmp6">
! <strong>018: RELIABILITY FIX: January 16, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! Under some circumstances, processing an ICMP6 echo request would cause
! the kernel to enter an infinite loop.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/018_icmp6.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="agp">
! <strong>017: SECURITY FIX: January 3, 2007</strong>
! &nbsp; <i>i386 only</i><br>
! Insufficient validation in
! <a href="https://man.openbsd.org/OpenBSD-3.9/vga.4">vga(4)</a>
! may allow an attacker to gain root privileges if the kernel is compiled with
! <code>option PCIAGP</code>
! and the actual device is not an AGP device.
! The <code>PCIAGP</code> option is present by default on i386
! kernels only.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/i386/017_agp.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="ldso">
! <strong>016: SECURITY FIX: November 19, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! The ELF
! <a href="https://man.openbsd.org/OpenBSD-3.9/ld.so.1">ld.so(1)</a>
! fails to properly sanitize the environment. There is a potential localhost security
! problem in cases we have not found yet.  This patch applies to all ELF-based
! systems (m68k, m88k, and vax are a.out-based systems).
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/016_ldso.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="ssh">
! <strong>015: SECURITY FIX: October 12, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Fix 2 security bugs found in OpenSSH. A pre-authentication denial of service (found
! by Tavis Ormandy) that would cause
! <a href="https://man.openbsd.org/OpenBSD-3.9/sshd.8">sshd(8)</a>
! to spin until the login grace time expired.
! An unsafe signal handler (found by Mark Dowd) that is vulnerable to a race condition
! that could be exploited to perform a pre-authentication denial of service.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924">CVE-2006-4924</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051">CVE-2006-5051</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/015_ssh.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="systrace">
! <strong>014: SECURITY FIX: October 7, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Fix for an integer overflow in
! <a href="https://man.openbsd.org/OpenBSD-3.9/systrace.4">systrace(4)</a>'s
! STRIOCREPLACE support, found by
! Chris Evans. This could be exploited for DoS, limited kmem reads or local
! privilege escalation.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/014_systrace.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="openssl2">
! <strong>013: SECURITY FIX: October 7, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Several problems have been found in OpenSSL. While parsing certain invalid ASN.1
! structures an error condition is mishandled, possibly resulting in an infinite
! loop. A buffer overflow exists in the SSL_get_shared_ciphers function. A NULL
! pointer may be dereferenced in the SSL version 2 client code. In addition, many
! applications using OpenSSL do not perform any validation of the lengths of
! public keys being used.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937">CVE-2006-2937</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738">CVE-2006-3738</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343">CVE-2006-4343</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940">CVE-2006-2940</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/013_openssl2.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
--- 85,231 ----
  
  <ul>
  
! <li id="sendmail">
! <strong>001: SECURITY FIX: March 25, 2006</strong>
! &nbsp; <i>All architectures</i><br>
! A race condition has been reported to exist in the handling by sendmail of
! asynchronous signals. A remote attacker may be able to execute arbitrary code with the
! privileges of the user running sendmail, typically root. This is the second revision of
! this patch.
! <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/001_sendmail.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="xorg">
! <strong>002: SECURITY FIX: May 2, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A security vulnerability has been found in the X.Org server --
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1526">CVE-2006-1526</a>.
! Clients authorized to connect to the X server are able to crash it and to execute
! malicious code within the X server.
! <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/002_xorg.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sendmail2">
! <strong>003: SECURITY FIX: June 15, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A potential denial of service problem has been found in sendmail. A malformed MIME
! message could trigger excessive recursion which will lead to stack exhaustion.
! This denial of service attack only affects delivery of mail from the queue and
! delivery of a malformed message. Other incoming mail is still accepted and
! delivered. However, mail messages in the queue may not be reattempted if a
! malformed MIME message exists.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/003_sendmail2.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="httpd">
! <strong>004: SECURITY FIX: July 30, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! <a href="https://man.openbsd.org/OpenBSD-3.9/httpd.8">httpd(8)</a>'s
! mod_rewrite has a potentially exploitable off-by-one buffer overflow.
! The buffer overflow may result in a vulnerability which, in combination
! with certain types of Rewrite rules in the web server configuration files,
! could be triggered remotely. The default install is not affected by the
! buffer overflow. CVE-2006-3747
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/004_httpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sendmail3">
! <strong>005: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A potential denial of service problem has been found in sendmail. A message
! with really long header lines could trigger a use-after-free bug causing
! sendmail to crash.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/005_sendmail3.patch">
! A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="dhcpd">
! <strong>006: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to an off-by-one error in
! <a href="https://man.openbsd.org/OpenBSD-3.9/dhcpd.8">dhcpd(8)</a>,
! it is possible to cause
! <a href="https://man.openbsd.org/OpenBSD-3.9/dhcpd.8">dhcpd(8)</a>
! to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier option.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3122">CVE-2006-3122</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/006_dhcpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sem">
! <strong>007: SECURITY FIX: August 25, 2006</strong>
! &nbsp; <i>All architectures</i><br>
! It is possible to cause the kernel to panic when more than the default number of
! sempahores have been allocated.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/007_sem.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="isakmpd">
! <strong>008: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A problem in
! <a href="https://man.openbsd.org/OpenBSD-3.9/isakmpd.8">isakmpd(8)</a>
! caused IPsec to run partly without replay protection. If
! <a href="https://man.openbsd.org/OpenBSD-3.9/isakmpd.8">isakmpd(8)</a>
! was acting as responder during SA negotiation, SA's with a replay window of size 0 were created.
! An attacker could reinject sniffed IPsec packets, which will be accepted without checking the
! replay counter.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/008_isakmpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sppp">
! <strong>009: SECURITY FIX: September 2, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to the failure to correctly validate LCP configuration option lengths,
! it is possible for an attacker to send LCP packets via an
! <a href="https://man.openbsd.org/OpenBSD-3.9/sppp.4">sppp(4)</a>
! connection causing the kernel to panic.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4304">CVE-2006-4304</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/009_sppp.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="bind">
! <strong>010: SECURITY FIX: September 8, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Two Denial of Service issues have been found with BIND.
! An attacker who can perform recursive lookups on a DNS server and is able
! to send a sufficiently large number of recursive queries, or is able to
! get the DNS server to return more than one SIG(covered) RRsets can stop
! the functionality of the DNS service.
! An attacker querying an authoritative DNS server serving a RFC 2535
! DNSSEC zone may be able to crash the DNS server.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4095">CVE-2006-4095</a>
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4096">CVE-2006-4096</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/010_bind.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="openssl">
! <strong>011: SECURITY FIX: September 8, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is possible for
! an attacker to construct an invalid signature which OpenSSL would accept as a
! valid PKCS#1 v1.5 signature.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339">CVE-2006-4339</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/011_openssl.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
***************
*** 243,389 ****
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="openssl">
! <strong>011: SECURITY FIX: September 8, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is possible for
! an attacker to construct an invalid signature which OpenSSL would accept as a
! valid PKCS#1 v1.5 signature.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339">CVE-2006-4339</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/011_openssl.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="bind">
! <strong>010: SECURITY FIX: September 8, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Two Denial of Service issues have been found with BIND.
! An attacker who can perform recursive lookups on a DNS server and is able
! to send a sufficiently large number of recursive queries, or is able to
! get the DNS server to return more than one SIG(covered) RRsets can stop
! the functionality of the DNS service.
! An attacker querying an authoritative DNS server serving a RFC 2535
! DNSSEC zone may be able to crash the DNS server.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4095">CVE-2006-4095</a>
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4096">CVE-2006-4096</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/010_bind.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sppp">
! <strong>009: SECURITY FIX: September 2, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to the failure to correctly validate LCP configuration option lengths,
! it is possible for an attacker to send LCP packets via an
! <a href="https://man.openbsd.org/OpenBSD-3.9/sppp.4">sppp(4)</a>
! connection causing the kernel to panic.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4304">CVE-2006-4304</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/009_sppp.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="isakmpd">
! <strong>008: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A problem in
! <a href="https://man.openbsd.org/OpenBSD-3.9/isakmpd.8">isakmpd(8)</a>
! caused IPsec to run partly without replay protection. If
! <a href="https://man.openbsd.org/OpenBSD-3.9/isakmpd.8">isakmpd(8)</a>
! was acting as responder during SA negotiation, SA's with a replay window of size 0 were created.
! An attacker could reinject sniffed IPsec packets, which will be accepted without checking the
! replay counter.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/008_isakmpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sem">
! <strong>007: SECURITY FIX: August 25, 2006</strong>
! &nbsp; <i>All architectures</i><br>
! It is possible to cause the kernel to panic when more than the default number of
! sempahores have been allocated.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/007_sem.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="dhcpd">
! <strong>006: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Due to an off-by-one error in
! <a href="https://man.openbsd.org/OpenBSD-3.9/dhcpd.8">dhcpd(8)</a>,
! it is possible to cause
! <a href="https://man.openbsd.org/OpenBSD-3.9/dhcpd.8">dhcpd(8)</a>
! to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier option.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3122">CVE-2006-3122</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/006_dhcpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sendmail3">
! <strong>005: SECURITY FIX: August 25, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A potential denial of service problem has been found in sendmail. A message
! with really long header lines could trigger a use-after-free bug causing
! sendmail to crash.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/005_sendmail3.patch">
! A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="httpd">
! <strong>004: SECURITY FIX: July 30, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! <a href="https://man.openbsd.org/OpenBSD-3.9/httpd.8">httpd(8)</a>'s
! mod_rewrite has a potentially exploitable off-by-one buffer overflow.
! The buffer overflow may result in a vulnerability which, in combination
! with certain types of Rewrite rules in the web server configuration files,
! could be triggered remotely. The default install is not affected by the
! buffer overflow. CVE-2006-3747
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/004_httpd.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sendmail2">
! <strong>003: SECURITY FIX: June 15, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A potential denial of service problem has been found in sendmail. A malformed MIME
! message could trigger excessive recursion which will lead to stack exhaustion.
! This denial of service attack only affects delivery of mail from the queue and
! delivery of a malformed message. Other incoming mail is still accepted and
! delivered. However, mail messages in the queue may not be reattempted if a
! malformed MIME message exists.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/003_sendmail2.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="xorg">
! <strong>002: SECURITY FIX: May 2, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! A security vulnerability has been found in the X.Org server --
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1526">CVE-2006-1526</a>.
! Clients authorized to connect to the X server are able to crash it and to execute
! malicious code within the X server.
! <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/002_xorg.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="sendmail">
! <strong>001: SECURITY FIX: March 25, 2006</strong>
! &nbsp; <i>All architectures</i><br>
! A race condition has been reported to exist in the handling by sendmail of
! asynchronous signals. A remote attacker may be able to execute arbitrary code with the
! privileges of the user running sendmail, typically root. This is the second revision of
! this patch.
! <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/001_sendmail.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
--- 242,389 ----
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="openssl2">
! <strong>013: SECURITY FIX: October 7, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Several problems have been found in OpenSSL. While parsing certain invalid ASN.1
! structures an error condition is mishandled, possibly resulting in an infinite
! loop. A buffer overflow exists in the SSL_get_shared_ciphers function. A NULL
! pointer may be dereferenced in the SSL version 2 client code. In addition, many
! applications using OpenSSL do not perform any validation of the lengths of
! public keys being used.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937">CVE-2006-2937</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738">CVE-2006-3738</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343">CVE-2006-4343</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940">CVE-2006-2940</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/013_openssl2.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="systrace">
! <strong>014: SECURITY FIX: October 7, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Fix for an integer overflow in
! <a href="https://man.openbsd.org/OpenBSD-3.9/systrace.4">systrace(4)</a>'s
! STRIOCREPLACE support, found by
! Chris Evans. This could be exploited for DoS, limited kmem reads or local
! privilege escalation.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/014_systrace.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="ssh">
! <strong>015: SECURITY FIX: October 12, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! Fix 2 security bugs found in OpenSSH. A pre-authentication denial of service (found
! by Tavis Ormandy) that would cause
! <a href="https://man.openbsd.org/OpenBSD-3.9/sshd.8">sshd(8)</a>
! to spin until the login grace time expired.
! An unsafe signal handler (found by Mark Dowd) that is vulnerable to a race condition
! that could be exploited to perform a pre-authentication denial of service.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924">CVE-2006-4924</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051">CVE-2006-5051</a>
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/015_ssh.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="ldso">
! <strong>016: SECURITY FIX: November 19, 2006</strong>
  &nbsp; <i>All architectures</i><br>
! The ELF
! <a href="https://man.openbsd.org/OpenBSD-3.9/ld.so.1">ld.so(1)</a>
! fails to properly sanitize the environment. There is a potential localhost security
! problem in cases we have not found yet.  This patch applies to all ELF-based
! systems (m68k, m88k, and vax are a.out-based systems).
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/016_ldso.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="agp">
! <strong>017: SECURITY FIX: January 3, 2007</strong>
! &nbsp; <i>i386 only</i><br>
! Insufficient validation in
! <a href="https://man.openbsd.org/OpenBSD-3.9/vga.4">vga(4)</a>
! may allow an attacker to gain root privileges if the kernel is compiled with
! <code>option PCIAGP</code>
! and the actual device is not an AGP device.
! The <code>PCIAGP</code> option is present by default on i386
! kernels only.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/i386/017_agp.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="icmp6">
! <strong>018: RELIABILITY FIX: January 16, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! Under some circumstances, processing an ICMP6 echo request would cause
! the kernel to enter an infinite loop.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/018_icmp6.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="timezone">
! <strong>019: INTEROPERABILITY FIX: February 4, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! A US daylight saving time rules change takes effect in 2007.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/019_timezone.patch">
! A source code patch exists which syncs the timezone data files with tzdata2007a</a>.<br>
  <p>
  
! <li id="m_dup1">
! <strong>020: SECURITY FIX: March 7, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! <b>2nd revision, March 17, 2007</b><br>
! Incorrect mbuf handling for ICMP6 packets.<br>
! Using
! <a href="https://man.openbsd.org/OpenBSD-3.9/pf.4">pf(4)</a>
! to avoid the problem packets is an effective workaround until the patch
! can be installed.<br>
! Use "block in inet6" in /etc/pf.conf
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/020_m_dup1.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="p021_xorg">
! <strong>021: SECURITY FIX: April 4, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! Multiple vulnerabilities have been discovered in X.Org.<br>
! XC-MISC extension ProcXCMiscGetXIDList memory corruption vulnerability,
! BDFFont parsing integer overflow vulnerability,
! fonts.dir file parsing integer overflow vulnerability,
! multiple integer overflows in the XGetPixel() and XInitImage functions
! in ImUtil.c.
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003">CVE-2007-1003</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351">CVE-2007-1351</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352">CVE-2007-1352</a>,
! <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1667">CVE-2007-1667</a>.
  <br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/021_xorg.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="p022_route6">
! <strong>022: SECURITY FIX: April 23, 2007</strong>
  &nbsp; <i>All architectures</i><br>
! IPv6 type 0 route headers can be used to mount a DoS attack against
! hosts and networks.  This is a design flaw in IPv6 and not a bug in
! OpenBSD.<br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/022_route6.patch">
  A source code patch exists which remedies this problem.</a>
  <p>
  
! <li id="p023_altivec">
! <strong>023: STABILITY FIX: April 26, 2007</strong>
! &nbsp; <i>PowerPC</i><br>
! An unhandled AltiVec assist exception can cause a kernel panic.<br>
! <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.9/macppc/023_altivec.patch">
  A source code patch exists which remedies this problem.</a>
  <p>