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<i>Open</i><b>BSD</b></a>
6.7 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="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="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>.
<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-6.7/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/6.7.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_wscons">
<strong>001: SECURITY FIX: May 19, 2020</strong>
<i>All architectures</i>
<br>
An out-of-bounds index access in wscons(4) can cause a kernel crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/001_wscons.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p002_rpki">
<strong>002: RELIABILITY FIX: May 22, 2020</strong>
<i>All architectures</i>
<br>
rpki-client could hang because of an improper waitpid idiom for rsync
processes.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/002_rpki.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p003_ssh">
<strong>003: SECURITY FIX: May 22, 2020</strong>
<i>All architectures</i>
<br>
When attempting to download resident keys from a FIDO token that does
not require a password/PIN, ssh-keygen would crash with a NULL
dereference.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/003_ssh.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p004_libssl">
<strong>004: RELIABILITY FIX: May 22, 2020</strong>
<i>All architectures</i>
<br>
A TLS client with peer verification disabled may crash when contacting a
server that sends an empty certificate list.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/004_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p005_unbound">
<strong>005: SECURITY FIX: May 22, 2020</strong>
<i>All architectures</i>
<br>
Specially crafted queries may crash unbound and unwind.
Both can be tricked into amplifying an incoming query.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/005_unbound.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p006_smtpd_sockaddr">
<strong>006: SECURITY FIX: May 25, 2020</strong>
<i>All architectures</i>
<br>
Incorrect use of getpeername(2) storage for outgoing IPv6 connections
corrupts stack memory. The nature of the corruption and existing
mitigations appear to make this difficult to effectively target.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/006_smtpd_sockaddr.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p007_perl">
<strong>007: SECURITY FIX: June 1, 2020</strong>
<i>All architectures</i>
<br>
Several problems in Perl's regular expression compiler could lead to
corruption of the intermediate language state of a compiled regular
expression.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/007_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p008_hid">
<strong>008: SECURITY FIX: June 5, 2020</strong>
<i>All architectures</i>
<br>
Malicious HID descriptors could be misparsed.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/008_hid.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p009_asr">
<strong>009: RELIABILITY FIX: June 8, 2020</strong>
<i>All architectures</i>
<br>
libc's resolver could get into a corrupted state.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/009_asr.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p010_x509">
<strong>010: RELIABILITY FIX: June 11, 2020</strong>
<i>All architectures</i>
<br>
libcrypto may fail to build a valid certificate chain due to
expired untrusted issuer certificates.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/010_x509.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p011_shmget">
<strong>011: SECURITY FIX: July 9, 2020</strong>
<i>All architectures</i>
<br>
shmget IPC_STAT leaked some kernel data.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/011_shmget.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p012_tty">
<strong>012: RELIABILITY FIX: July 16, 2020</strong>
<i>All architectures</i>
<br>
tty subsystem abuse can impact performance badly.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/012_tty.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p013_tty">
<strong>013: RELIABILITY FIX: July 22, 2020</strong>
<i>All architectures</i>
<br>
Only pty devices need reprint delays.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/013_tty.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p014_iked">
<strong>014: SECURITY FIX: July 27, 2020</strong>
<i>All architectures</i>
<br>
In iked, incorrect use of EVP_PKEY_cmp allows an authentication bypass.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/014_iked.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p015_rpki">
<strong>015: SECURITY FIX: July 27, 2020</strong>
<i>All architectures</i>
<br>
In rpki-client, incorrect use of EVP_PKEY_cmp allows an authentication bypass.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/015_rpki.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p016_ximcp">
<strong>016: SECURITY FIX: July 31, 2020</strong>
<i>All architectures</i>
<br>
Malformed messages can cause heap corruption in the X Input Method
client implementation in libX11.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/016_ximcp.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p017_dix">
<strong>017: SECURITY FIX: July 31, 2020</strong>
<i>All architectures</i>
<br>
Pixmaps inside the xserver were an info leak.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/017_dix.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p018_ximcp">
<strong>018: RELIABILITY FIX: August 7, 2020</strong>
<i>All architectures</i>
<br>
The recent security errata 016 broke X11 input methods.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/018_ximcp.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p019_libssl">
<strong>019: RELIABILITY FIX: August 11, 2020</strong>
<i>All architectures</i>
<br>
The TLSv1.3 client could hang, crash, leak memory or not interoperate with
some TLSv1.3 servers.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/019_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p020_libssl">
<strong>020: RELIABILITY FIX: August 18, 2020</strong>
<i>All architectures</i>
<br>
The previous errata patch 019 broke bidirectional SSL_shutdown.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/020_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p021_xinitom">
<strong>021: SECURITY FIX: August 25, 2020</strong>
<i>All architectures</i>
<br>
An integer overflow in libX11 could lead to a double free.
Additionally fix a regression in ximcp.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/021_xinitom.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p022_xserverlen">
<strong>022: SECURITY FIX: August 25, 2020</strong>
<i>All architectures</i>
<br>
Various X server extensions had deficient input validation.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/022_xserverlen.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p023_amdgpu">
<strong>023: SECURITY FIX: September 5, 2020</strong>
<i>amd64, arm64</i>
<br>
A buffer overflow was discovered in an amdgpu ioctl.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/023_amdgpu.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p024_mmap">
<strong>024: RELIABILITY FIX: October 6, 2020</strong>
<i>All architectures</i>
<br>
mmap can exhaust kernel memory for PROT_NONE MAP_SHARED mappings.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/024_mmap.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p025_bgpd">
<strong>025: RELIABILITY FIX: October 29, 2020</strong>
<i>All architectures</i>
<br>
In bgpd, the roa-set parser could leak memory.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/025_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p026_icmp6">
<strong>026: SECURITY FIX: October 29, 2020</strong>
<i>All architectures</i>
<br>
When generating the ICMP6 response to an IPv6 packet, the kernel
could use mbuf memory after freeing it.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/026_icmp6.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p027_tmux">
<strong>027: SECURITY FIX: October 29, 2020</strong>
<i>All architectures</i>
<br>
tmux has a stack overflow in CSI parsing.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/027_tmux.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p028_unwind">
<strong>028: RELIABILITY FIX: November 10, 2020</strong>
<i>All architectures</i>
<br>
unwind fails to process large DNS replies.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/028_unwind.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p029_rpki">
<strong>029: RELIABILITY FIX: November 10, 2020</strong>
<i>All architectures</i>
<br>
rpki-client incorrectly checks the manifest validity interval.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/029_rpki.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p030_xmaplen">
<strong>030: SECURITY FIX: December 1, 2020</strong>
<i>All architectures</i>
<br>
Multiple input validation failures in the X server XKB extension can lead
to out of bounds memory accesses for authorized clients.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/030_xmaplen.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p031_asn1">
<strong>031: SECURITY FIX: December 8, 2020</strong>
<i>All architectures</i>
<br>
Malformed ASN.1 in a certificate revocation list or a timestamp
response token can lead to a NULL pointer dereference.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/031_asn1.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p032_exit">
<strong>032: RELIABILITY FIX: December 8, 2020</strong>
<i>All architectures</i>
<br>
Process exit in multithreaded programs could result in the wrong exit
code being reported.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/032_exit.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p033_smtpd">
<strong>033: RELIABILITY FIX: December 24, 2020</strong>
<i>All architectures</i>
<br>
smtpd's filter state machine can prematurely release resources
leading to a crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/033_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p034_nd6">
<strong>034: RELIABILITY FIX: January 11, 2021</strong>
<i>All architectures</i>
<br>
When an NDP entry is invalidated the associated layer 2 address
is not invalidated.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/034_nd6.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p035_pffrag">
<strong>035: SECURITY FIX: February 24, 2021</strong>
<i>All architectures</i>
<br>
A sequence of overlapping IPv4 fragments could crash the kernel in
pf due to an assertion.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/035_pffrag.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p036_sshagent">
<strong>036: SECURITY FIX: March 4, 2021</strong>
<i>All architectures</i>
<br>
Double free in ssh-agent(1)
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/036_sshagent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p037_npppd">
<strong>037: SECURITY FIX: March 9, 2021</strong>
<i>All architectures</i>
<br>
npppd PPTP protocol handler can cause heap over-read leading to a crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/037_npppd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p038_xi">
<strong>038: SECURITY FIX: April 13, 2021</strong>
<i>All architectures</i>
<br>
Input validation failures in X server XInput extension can lead to
privileges elevations for authorized clients.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/038_xi.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>
</ul>
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