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<h2>
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<font color="#0000ff"><i>Open</i></font><font color="#000084">BSD</font></a>
<font color="#e00000">6.3 Errata</font>
</h2>
<hr>
For errata on a certain release, click below:<br>
<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>,
<a href="errata36.html">3.6</a>,
<br>
<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="errata47.html">4.7</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>.
<hr>
<p>
Patches for the OpenBSD base system are distributed as unified diffs.
Each patch is cryptographically signed with the
<a href="https://man.openbsd.org/OpenBSD-6.3/signify.1">signify(1)</a> tool and contains
usage instructions.
All the following patches are also available in one
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3.tar.gz">tar.gz file</a>
for convenience.
<p>
Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
utility can be used to apply binary updates on the following architectures:
amd64, i386, arm64.
<p>
Patches for supported releases are also incorporated into the
<a href="stable.html">-stable branch</a>, which is maintained for one year
after release.
<hr>
<ul>
<li id="p001_perl">
<font color="#009000">
<strong>001: SECURITY FIX: April 14, 2018</strong></font>
<i>All architectures</i>
<br>
Heap overflows exist in perl which can lead to segmentation faults,
crashes, and reading memory past the buffer.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/001_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p002_libtls">
<font color="#009000">
<strong>002: RELIABILITY FIX: April 21, 2018</strong></font>
<i>All architectures</i>
<br>
Additional data is inadvertently removed when private keys are cleared from
TLS configuration, which can prevent OCSP from functioning correctly.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/002_libtls.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p003_arp">
<font color="#009000">
<strong>003: RELIABILITY FIX: April 21, 2018</strong></font>
<i>All architectures</i>
<br>
ARP replies could be sent on the wrong member of a bridge(4) interface.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/003_arp.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p004_gif">
<font color="#009000">
<strong>004: SECURITY FIX: April 21, 2018</strong></font>
<i>All architectures</i>
<br>
In the gif(4) interface, use the specified protocol for IPv6, plug
a mbuf leak and avoid a use after free.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/004_gif.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p005_httpd">
<font color="#009000">
<strong>005: RELIABILITY FIX: April 21, 2018</strong></font>
<i>All architectures</i>
<br>
httpd can leak file descriptors when servicing range requests.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/005_httpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p006_ipseclen">
<font color="#009000">
<strong>006: RELIABILITY FIX: May 8, 2018</strong></font>
<i>All architectures</i>
<br>
Incorrect handling of fragmented IPsec packets could result in a system crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/006_ipseclen.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p007_libcrypto">
<font color="#009000">
<strong>007: RELIABILITY FIX: May 8, 2018</strong></font>
<i>All architectures</i>
<br>
Incorrect checks in libcrypto can prevent Diffie-Hellman Exchange operations
from working.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/007_libcrypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p008_ipsecout">
<font color="#009000">
<strong>008: RELIABILITY FIX: May 17, 2018</strong></font>
<i>All architectures</i>
<br>
A malicious packet can cause a kernel crash when using IPsec over IPv6.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/008_ipsecout.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p009_libcrypto">
<font color="#009000">
<strong>009: SECURITY FIX: June 14, 2018</strong></font>
<i>All architectures</i>
<br>
DSA and ECDSA signature generation can potentially leak secret information
to a timing side-channel attack.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/009_libcrypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p010_intelfpu">
<font color="#009000">
<strong>010: SECURITY FIX: June 17, 2018</strong></font>
<i>amd64</i>
<br>
Intel CPUs speculatively access FPU registers even when the FPU is disabled,
so data (including AES keys) from previous contexts could be discovered
if using the lazy-save approach.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/010_intelfpu.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p011_perl">
<font color="#009000">
<strong>011: SECURITY FIX: June 21, 2018</strong></font>
<i>All architectures</i>
<br>
Perl's Archive::Tar module could be made to write files outside of
its working directory.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/011_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p012_execsize">
<font color="#009000">
<strong>012: RELIABILITY FIX: July 25, 2018</strong></font>
<i>All architectures</i>
<br>
A regular user could trigger a kernel panic by executing an invalid
ELF binary.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/012_execsize.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p013_ipsecexpire">
<font color="#009000">
<strong>013: RELIABILITY FIX: July 25, 2018</strong></font>
<i>All architectures</i>
<br>
When an IPsec key expired, the kernel could panic due to unfinished
timeout tasks.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/013_ipsecexpire.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p014_amdlfence">
<font color="#009000">
<strong>014: SECURITY FIX: July 31, 2018</strong></font>
<i>amd64 and i386</i>
<br>
On AMD CPUs, set a chicken bit which turns LFENCE into a serialization
instruction against speculation.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/014_amdlfence.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p015_ioport">
<font color="#009000">
<strong>015: SECURITY FIX: July 25, 2018</strong></font>
<i>i386</i>
<br>
IO port permissions were incorrectly restricted.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
</ul>
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