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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
6.0 Errata
</h2>
<hr>

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="errata58.html">5.8</a>,
<a href="errata59.html">5.9</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-6.0/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/6.0.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_uvmisavail">
<strong>001: 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/6.0/common/001_uvmisavail.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p002_perl">
<strong>002: RELIABILITY FIX: August 6, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Fixes IO::Socket::IP complaining about non-numeric version numbers.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/002_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p003_relayd">
<strong>003: 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/6.0/common/003_relayd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p004_smtpd">
<strong>004: RELIABILITY FIX: August 23, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
A missing initialization can prevent mail headers from being altered as
intended, resulting in mail being sent to incorrect addresses.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/004_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p005_wsfont">
<strong>005: RELIABILITY FIX: September 17, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Limit the number of wscons fonts that can be loaded into the kernel.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/005_wsfont.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p006_iked">
<strong>006: RELIABILITY FIX: September 17, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
During parsing of the iked(8) configuration, a variable is set to 0
by mistake, disabling Pre-Shared Key authentication.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/006_iked.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p007_libcrypto">
<strong>007: RELIABILITY FIX: September 22, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Revert change that cleans up the EVP cipher context in EVP_EncryptFinal()
and EVP_DecryptFinal(). Some software relies on the previous behaviour.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/007_libcrypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p008_libssl">
<strong>008: RELIABILITY FIX: September 22, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Avoid unbounded memory growth in libssl, which can be triggered by a TLS
client repeatedly renegotiating and sending OCSP Status Request TLS extensions.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/008_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p009_libssl">
<strong>009: SECURITY FIX: September 22, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Avoid falling back to a weak digest for (EC)DH when using SNI with libssl.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/009_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p010_smtpd">
<strong>010: RELIABILITY FIX: October 3, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
A bug in the smtp session logic can lead to a server crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/010_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p011_xorg_libs">
<strong>011: SECURITY FIX: October 4, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Fix a number of issues in the way various X client libraries handle
server responses.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/011_xorg_libs.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p012_amap">
<strong>012: RELIABILITY FIX: October 8, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Allocation of an amap with at least 131072 slots causes an integer overflow
that leads to an infinite loop.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/012_amap.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p013_ssh_kexinit">
<strong>013: RELIABILITY FIX: October 10, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
A protocol parsing bug in sshd can lead to unauthenticated memory
and CPU consumption.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p014_smtpd.patch">
<strong>014: RELIABILITY FIX: October 13, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
A logic issue in smtpd's header parsing can cause SMTP sessions to hang.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/014_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p015_libssl.patch">
<strong>015: RELIABILITY FIX: November 5, 2016</strong>
&nbsp; <i>All architectures</i>
<br>
Avoid continual processing of an unlimited number of TLS records.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/015_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p016_libcrypto.patch">
<strong>016: SECURITY FIX: January 5, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
Avoid possible side-channel leak of ECDSA private keys when signing.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p017_httpd.patch">
<strong>017: RELIABILITY FIX: January 31, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A bug in the processing of range headers in httpd can lead to memory
exhaustion and a crash of httpd. This patch disables range header
processing.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/017_httpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p018_net80211.patch">
<strong>018: SECURITY FIX: March 1, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
WiFi clients using WPA1 or WPA2 are vulnerable to a man-in-the-middle attack
by rogue access points.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/018_net80211.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p019_pf.patch">
<strong>019: RELIABILITY FIX: March 9, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
Prevent integer overflow in PF when calculating the adaptive timeout,
causing spuriously expired states under pressure.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/019_pf.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p020_exec_elf.patch">
<strong>020: SECURITY FIX: March 20, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
ELF auxiliary vector storage leaks piece of kernel stack.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/020_exec_elf.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p021_softraid_concat">
<strong>021: RELIABILITY FIX: May 2, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
softraid was unable to create usable concat volumes because
it always set the size of the volume to zero sectors.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/021_softraid_concat.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p022_libssl">
<strong>022: RELIABILITY FIX: May 8, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
Incorrect DTLS cookie handling can result in a NULL pointer dereference.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/022_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p023_freetype">
<strong>023: SECURITY FIX: May 13, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
Heap-based buffer overflows in freetype can result in out-of-bounds writes.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/023_freetype.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p024_exec_subr">
<strong>024: SECURITY FIX: May 19, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An additional mitigation is added by placing a gap of 1 MB between the
stack and mmap spaces.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/024_exec_subr.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p025_icmp_opts">
<strong>025: RELIABILITY FIX: May 22, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
The kernel could leak memory when processing ICMP packets with IP options.
Note that pf blocks such packets by default.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/025_icmp_opts.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p026_perl">
<strong>026: SECURITY FIX: June 4, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A race condition exists in the File::Path perl module.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/026_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p027_sti">
<strong>027: SECURITY FIX: June 12, 2017</strong>
&nbsp; <i>hppa</i>
<br>
An integer overflow exists in two range checks of the sti(4) display driver.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/027_sti.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p028_wsmux">
<strong>028: RELIABILITY FIX: June 12, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An unprivileged user can cause a kernel crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/028_wsmux.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p029_sigio">
<strong>029: RELIABILITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A SIGIO-related use-after-free can occur in two drivers.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/029_sigio.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p030_sendsyslog">
<strong>030: RELIABILITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A missing length check in sendsyslog() may result in a kernel panic.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/030_sendsyslog.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p031_fuse">
<strong>031: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An out-of-bound read in vfs_getcwd_scandir() (mainly used for FUSE)
may result in a kernel panic or info leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/031_fuse.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p032_recv">
<strong>032: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An alignment issue in recv() may result in an info leak via ktrace().
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/032_recv.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p033_tcp_usrreq">
<strong>033: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
With an invalid address family, tcp_usrreq() may take an unintended code path.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/033_tcp_usrreq.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p034_sockaddr">
<strong>034: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
Missing socket address validation from userland may result in an info leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/034_sockaddr.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p035_ptrace">
<strong>035: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An uninitialized variable in ptrace() may result in an info leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/035_ptrace.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p036_fcntl">
<strong>036: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An uninitialized variable in fcntl() may result in an info leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/036_fcntl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p037_wsdisplay">
<strong>037: RELIABILITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An integer overflow in wsdisplay_cfg_ioctl() may result in an out-of-bounds
read.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/037_wsdisplay.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p038_sosplice">
<strong>038: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A race condition may result in a kernel memory leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/038_sosplice.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p039_ieee80211">
<strong>039: SECURITY FIX: August 3, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
An out of bounds read could occur during processing of EAPOL frames in
the wireless stack. Information from kernel memory could be leaked to
root in userland via an ieee80211(9) ioctl.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/039_ieee80211.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p040_smap">
<strong>040: SECURITY FIX: August 26, 2017</strong>
&nbsp; <i>amd64 and i386</i>
<br>
SMAP enforcement could be bypassed by userland code.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/040_smap.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p041_net80211_replay">
<strong>041: SECURITY FIX: August 30, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
State transition errors could cause reinstallation of old WPA keys.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/041_net80211_replay.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p042_perl">
<strong>042: SECURITY FIX: September 22, 2017</strong>
&nbsp; <i>All architectures</i>
<br>
A buffer over-read and heap overflow in perl's regexp may result in
a crash or memory leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/042_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p043_tcb">
<strong>043: RELIABILITY FIX: September 27, 2017</strong>
&nbsp; <i>amd64</i>
<br>
Out of bounds TCB settings may result in a kernel panic.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/043_tcb.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p044_xrstor">
<strong>044: RELIABILITY FIX: October 4, 2017</strong>
&nbsp; <i>amd64</i>
<br>
An unprivileged user can cause a kernel crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/044_xrstor.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p045_xrstor_resume">
<strong>045: SECURITY FIX: October 4, 2017</strong>
&nbsp; <i>amd64</i>
<br>
A kernel executable address was leaked to userland.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/045_xrstor_resume.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>