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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
4.7 Errata
</h2>
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For errata on a certain release, click below:<br>
<a href="errata20.html">2.0</a>,
<a href="errata21.html">2.1</a>,
<a href="errata22.html">2.2</a>,
<a href="errata23.html">2.3</a>,
<a href="errata24.html">2.4</a>,
<a href="errata25.html">2.5</a>,
<a href="errata26.html">2.6</a>,
<a href="errata27.html">2.7</a>,
<a href="errata28.html">2.8</a>,
<a href="errata29.html">2.9</a>,
<a href="errata30.html">3.0</a>,
<a href="errata31.html">3.1</a>,
<a href="errata32.html">3.2</a>,
<a href="errata33.html">3.3</a>,
<a href="errata34.html">3.4</a>,
<a href="errata35.html">3.5</a>,
<br>
<a href="errata36.html">3.6</a>,
<a href="errata37.html">3.7</a>,
<a href="errata38.html">3.8</a>,
<a href="errata39.html">3.9</a>,
<a href="errata40.html">4.0</a>,
<a href="errata41.html">4.1</a>,
<a href="errata42.html">4.2</a>,
<a href="errata43.html">4.3</a>,
<a href="errata44.html">4.4</a>,
<a href="errata45.html">4.5</a>,
<a href="errata46.html">4.6</a>,
<a href="errata48.html">4.8</a>,
<a href="errata49.html">4.9</a>,
<a href="errata50.html">5.0</a>,
<a href="errata51.html">5.1</a>,
<a href="errata52.html">5.2</a>,
<br>
<a href="errata53.html">5.3</a>,
<a href="errata54.html">5.4</a>,
<a href="errata55.html">5.5</a>,
<a href="errata56.html">5.6</a>,
<a href="errata57.html">5.7</a>,
<a href="errata58.html">5.8</a>,
<a href="errata59.html">5.9</a>,
<a href="errata60.html">6.0</a>,
<a href="errata61.html">6.1</a>,
<a href="errata62.html">6.2</a>,
<a href="errata63.html">6.3</a>,
<a href="errata64.html">6.4</a>,
<a href="errata65.html">6.5</a>,
<a href="errata66.html">6.6</a>,
<a href="errata67.html">6.7</a>,
<a href="errata68.html">6.8</a>,
<br>
<a href="errata69.html">6.9</a>,
<a href="errata70.html">7.0</a>,
<a href="errata71.html">7.1</a>,
<a href="errata72.html">7.2</a>,
<a href="errata73.html">7.3</a>,
<a href="errata74.html">7.4</a>,
<a href="errata75.html">7.5</a>,
<a href="errata76.html">7.6</a>,
<a href="errata77.html">7.7</a>.
<hr>

<p>
Patches for the OpenBSD base system are distributed as unified diffs.
Each patch contains usage instructions.
All the following patches are also available in one
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7.tar.gz">tar.gz file</a>
for convenience.

<p>
Patches for supported releases are also incorporated into the
<a href="stable.html">-stable branch</a>.

<hr>

<ul>

<li id="p001_kerberos">
<strong>001: RELIABILITY FIX: March 31, 2010</strong>
&nbsp; <i>All architectures</i><br>
When decrypting packets, the internal decryption functions were not
paranoid enough in checking for underruns, which could potentially
lead to crashes.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/001_kerberos.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p002_mpi">
<strong>002: RELIABILITY FIX: April 4, 2010</strong>
&nbsp; <i>All architectures</i><br>
When updating sensors showing the state of RAID volumes
<a href="https://man.openbsd.org/OpenBSD-4.7/mpi.4">mpi(4)</a>
allocates temporary memory and then returns it to the kernel as
device memory.
This causes kernel memory usage to be misrepresented, eventually
leading to a denial of service when a resource limit is apparently
reached.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/002_mpi.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p003_openssl">
<strong>003: SECURITY FIX: April 14, 2010</strong>
&nbsp; <i>All architectures</i><br>
In TLS connections, certain incorrectly formatted records can cause
an OpenSSL client or server to crash due to a read attempt at NULL.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/003_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p004_pfsync">
<strong>004: SECURITY FIX: April 23, 2010</strong>
&nbsp; <i>All architectures</i><br>
The combination of pfsync and IPSEC may crash the kernel.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/004_pfsync.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p005_pfsync">
<strong>005: RELIABILITY FIX: May 14, 2010</strong>
&nbsp; <i>All architectures</i><br>
Incorrectly initialized state updates can cause pfsync update storms.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/005_pfsync.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p006_scsi">
<strong>006: RELIABILITY FIX: July 8, 2010</strong>
&nbsp; <i>All architectures</i><br>
Restore an unusual XS_SENSE semantic. Fixes dump(8)/restore(8) problems seen on certain tape drives.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/006_scsi.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p007_scsi">
<strong>007: RELIABILITY FIX: September 14, 2010</strong>
&nbsp; <i>All architectures</i><br>
Avoid calling scsi_done() more than once in gdt(4). Fixes a kernel panic triggered by syncing disks during shut down.<br>
Clear the ITSDONE flag before issuing commands to the SCSI adapter. Fixes handling of retried SCSI commands.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/007_scsi.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p008_openssl">
<strong>008: RELIABILITY FIX: November 17, 2010</strong>
&nbsp; <i>All architectures</i><br>
Fix a flaw in the OpenSSL TLS server extension code parsing which could lead to
a buffer overflow. This affects OpenSSL based TLS servers which are multi-threaded
and use OpenSSL's internal caching mechanism. Servers that are multi-process
and/or disable internal session caching are not affected.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/008_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p009_pf">
<strong>009: SECURITY FIX: December 17, 2010</strong>
&nbsp; <i>All architectures</i><br>
Insufficient initialization of the pf rule structure in the ioctl
handler may allow userland to modify kernel memory. By default root
privileges are needed to add or modify pf rules.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/009_pf.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p010_cbc">
<strong>010: RELIABILITY FIX: December 20, 2010</strong>
&nbsp; <i>All architectures</i><br>
Bring CBC oracle attack countermeasures to hardware crypto accelerator land.
This fixes aes-ni, via xcrypt and various drivers
(<a href="https://man.openbsd.org/OpenBSD-4.7/glxsb.4">glxsb(4)</a>,
<a href="https://man.openbsd.org/OpenBSD-4.7/hifn.4">hifn(4)</a>,
<a href="https://man.openbsd.org/OpenBSD-4.7/safe.4">safe(4)</a>
and
<a href="https://man.openbsd.org/OpenBSD-4.7/ubsec.4">ubsec(4)</a>).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/010_cbc.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p011_rtsock">
<strong>011: RELIABILITY FIX: January 13, 2011</strong>
&nbsp; <i>All architectures</i><br>
sp_protocol in RTM_DELETE messages could contain garbage values
leading to routing socket users that restrict the AF (such as ospfd)
not seeing any of the RTM_DELETE messages.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/011_rtsock.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p012_openssl">
<strong>012: SECURITY FIX: February 11, 2011</strong>
&nbsp; <i>All architectures</i><br>
An incorrectly formatted ClientHello handshake message could cause
OpenSSL to parse past the end of the message.  An attacker could use this flaw
to trigger an invalid memory access, causing a crash of an application linked
to OpenSSL.  As well, certain applications may expose the contents of parsed
OCSP extensions, specifically the OCSP nonce extension.
<p>
Applications are only affected if they act as a server and call
SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX.  It is believed
that nothing in the base OS uses this.  Apache httpd started using this
in v2.3.3; this is newer than the version in ports.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/012_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p013_pf">
<strong>013: SECURITY FIX: February 16, 2011</strong>
&nbsp; <i>Little-endian architectures</i><br>
PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
not correctly handled on little-endian systems (alpha, amd64, arm, i386,
mips64el, vax). Other address types (bare addresses "10.1.1.1" and
prefixes "10.1.1.1/30") are not affected.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/4.7/common/013_pf.patch">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>