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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
5.8 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="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>,
<br>
<a href="errata52.html">5.2</a>,
<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="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 is cryptographically signed with the
<a href="https://man.openbsd.org/OpenBSD-5.8/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/5.8.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_sshd">
<strong>001: SECURITY FIX: August 30, 2015</strong>
&nbsp; <i>All architectures</i><br>
Inverted logic made PermitRootLogin "prohibit-password" unsafe.
Use "no" (which is the installer default), or apply the following patch.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/001_sshd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p002_sslhello">
<strong>002: INTEROPERABILITY FIX: August 30, 2015</strong>
&nbsp; <i>All architectures</i><br>
LibreSSL 2.2.2 incorrectly handles ClientHello messages that do not
include TLS extensions, resulting in such handshakes being aborted.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/002_sslhello.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p003_uvm">
<strong>003: RELIABILITY FIX: September 28, 2015</strong>
&nbsp; <i>All architectures</i><br>
An incorrect operation in uvm could result in system panics.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/003_uvm.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p004_smtpd">
<strong>004: SECURITY FIX: October 1, 2015</strong>
&nbsp; <i>All architectures</i><br>
Fix multiple reliability and security issues in smtpd:<br>
<ul>
<li>local and remote users could make smtpd crash or stop serving requests.
<li>a buffer overflow in the unprivileged, non-chrooted smtpd (lookup)
    process could allow a local user to cause a crash or potentially
    execute arbitrary code.
<li>a use-after-free in the unprivileged, non-chrooted smtpd (lookup)
    process could allow a remote attacker to cause a crash or potentially
    execute arbitrary code.
<li>hardlink and symlink attacks allowed a local user to unset chflags or
    leak the first line of an arbitrary file.
</ul>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/004_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p005_kevent">
<strong>005: RELIABILITY FIX: October 14, 2015</strong>
&nbsp; <i>All architectures</i><br>
A problem with timer kevents could result in a kernel hang (local denial
of service).<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/005_kevent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p006_src">
<strong>006: RELEASE CD ISSUE: Oct 18, 2015</strong>
&nbsp; <i>All architectures</i><br>
The "src.tar.gz" file on the source tree was created on the wrong day,
and does not match the 5.8 release builds.

<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/5.8/cd-src.tar.gz">
A replacement file is available</a> in the 5.8 release directory with the name <b>cd-src.tar.gz</b>; due to size of the file, check local mirrors also.
<p>

<li id="p007_obj2txt">
<strong>007: RELIABILITY FIX: October 15, 2015</strong>
&nbsp; <i>All architectures</i><br>
The OBJ_obj2txt function in libcrypto contains a one byte buffer overrun
and memory leak, as reported by Qualys Security.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/007_obj2txt.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p008_rsn">
<strong>008: RELIABILITY FIX: November 9, 2015</strong>
&nbsp; <i>All architectures</i><br>
Insufficient validation of RSN element group cipher values in 802.11
beacons and probe responses could result in system panics.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/008_rsn.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p009_clientcert">
<strong>009: RELIABILITY FIX: Dec 3, 2015</strong>
&nbsp; <i>All architectures</i><br>
A NULL pointer dereference could be triggered by a crafted certificate sent to
services configured to verify client certificates on TLS/SSL connections.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/009_clientcert.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p010_sshd">
<strong>010: SECURITY FIX: January 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
Experimental roaming code in the ssh client could be tricked by a hostile sshd
server, potentially leaking key material.  CVE-2016-0777 and CVE-0216-0778.
<br>
Prevent this problem immediately by adding the line "UseRoaming no" to
<b>/etc/ssh/ssh_config</b>.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/010_ssh.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p011_sshd">
<strong>011: SECURITY FIX: March 10, 2016</strong>
&nbsp; <i>All architectures</i><br>
<a href="https://www.openssh.com/txt/x11fwd.adv">
Lack of credential sanitization allows injection of commands to xauth(1).</a>
<br>
Prevent this problem immediately by not using the "X11Forwarding" feature
(which is disabled by default)
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/011_sshd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p012_in6bind">
<strong>012: SECURITY FIX: March 16, 2016</strong>
&nbsp; <i>All architectures</i><br>
Insufficient checks in IPv6 socket binding and UDP IPv6 option
processing allow a local user to send UDP packets with a source
(IPv6 address + port) already reserved by another user.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/012_in6bind.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p013_crypto">
<strong>013: SECURITY FIX: May 3, 2016</strong>
&nbsp; <i>All architectures</i><br>
Fix issues in the libcrypto library.
Refer to <a href="https://www.openssl.org/news/secadv/20160503.txt">the OpenSSL advisory</a>.
<ul>
<li>Memory corruption in the ASN.1 encoder (CVE-2016-2108)
<li>Padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
<li>EVP_EncodeUpdate overflow (CVE-2016-2105)
<li>EVP_EncryptUpdate overflow (CVE-2016-2106)
<li>ASN.1 BIO excessive memory allocation (CVE-2016-2109)
</ul>
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/013_crypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p014_uvideo">
<strong>014: SECURITY FIX: May 17, 2016</strong>
&nbsp; <i>All architectures</i><br>
Insufficient checks in the uvideo(4) V4L2 ioctl handling leak kernel
memory contents to a local user.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/014_uvideo.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p015_crypto">
<strong>015: RELIABILITY FIX: May 29, 2016</strong>
&nbsp; <i>All architectures</i><br>
Fix a bug in the libcrypto library when parsing certain ASN.1 elements.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/015_crypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p016_libexpat">
<strong>016: SECURITY FIX: June 2, 2016</strong>
&nbsp; <i>All architectures</i><br>
Fix issues in the libexpat library to prevent multiple integer and buffer overflows.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/016_libexpat.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p017_crypto">
<strong>017: SECURITY FIX: June 6, 2016</strong>
&nbsp; <i>All architectures</i><br>
Correct a problem that prevents the DSA signing algorithm from running
in constant time even if the flag BN_FLG_CONSTTIME is set.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/017_crypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p018_splice">
<strong>018: RELIABILITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
Splicing sockets in a loop could cause a kernel spin.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/018_splice.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p019_dirent">
<strong>019: RELIABILITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
ufs_readdir failed to limit size of memory allocation, leading to panics.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/019_dirent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p020_mmap">
<strong>020: SECURITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
The mmap extension __MAP_NOFAULT could overcommit resources and crash
the system.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/020_mmap.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p021_timeout">
<strong>021: RELIABILITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
Tick counting overflows could cause a kernel crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/021_timeout.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p022_kevent">
<strong>022: RELIABILITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
Invalid file descriptor use with kevent(2) could lead to a kernel crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/022_kevent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p023_amap">
<strong>023: RELIABILITY FIX: July 14, 2016</strong>
&nbsp; <i>All architectures</i><br>
Unchecked parameters and integer overflows in the amap allocation routines
could cause malloc(9) to either not allocate enough memory, leading to memory
corruption, or to trigger a "malloc: allocation too large" panic.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/023_amap.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p024_relayd">
<strong>024: RELIABILITY FIX: July 25, 2016</strong>
&nbsp; <i>All architectures</i><br>
When signaling an error to an HTTP relay client, the connection can be
terminated prematurely, leading to a crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/024_relayd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p025_sysctl">
<strong>025: RELIABILITY FIX: August 2, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
A missing NULL check in sysctl code results in a crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/025_sysctl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p026_uvmisavail">
<strong>026: RELIABILITY FIX: August 2, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Missing overflow checks in uvm may result in panics.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/026_uvmisavail.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p027_perl">
<strong>027: SECURITY FIX: August 6, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Don't look in the current working directory for perl modules to load.
See the <a href="https://marc.info/?l=perl5-porters&amp;m=146945269625067&amp;w=2">
perl5-porters announcement</a> for details.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/027_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p028_relayd">
<strong>028: RELIABILITY FIX: August 6, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Improve relayd's parsing of the Host-header by following RFC 7230
Section 5.4 more strictly.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/028_relayd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>