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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
6.8 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="errata67.html">6.7</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-6.8/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/6.8.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>.

<hr>

<ul>

<li id="p001_bgpd">
<strong>001: RELIABILITY FIX: October 29, 2020</strong>
&nbsp; <i>All architectures</i>
<br>
In bgpd, the roa-set parser could leak memory.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/001_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p002_icmp6">
<strong>002: SECURITY FIX: October 29, 2020</strong>
&nbsp; <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/6.8/common/002_icmp6.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p003_tmux">
<strong>003: SECURITY FIX: October 29, 2020</strong>
&nbsp; <i>All architectures</i>
<br>
tmux has a stack overflow in CSI parsing.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/003_tmux.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p004_wg">
<strong>004: RELIABILITY FIX: November 05, 2020</strong>
&nbsp; <i>All architectures</i>
<br>
wg(4) could panic the kernel by releasing the wrong lock.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/004_wg.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p005_unwind">
<strong>005: RELIABILITY FIX: November 10, 2020</strong>
&nbsp; <i>All architectures</i>
<br>
unwind fails to process large DNS replies.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/005_unwind.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p006_rpki">
<strong>006: RELIABILITY FIX: November 10, 2020</strong>
&nbsp; <i>All architectures</i>
<br>
rpki-client incorrectly checks the manifest validity interval.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/006_rpki.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p007_xmaplen">
<strong>007: SECURITY FIX: December 1, 2020</strong>
&nbsp; <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/6.8/common/007_xmaplen.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p008_xmaplen">
<strong>008: SECURITY FIX: December 8, 2020</strong>
&nbsp; <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/6.8/common/008_asn1.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p009_exit">
<strong>009: RELIABILITY FIX: December 8, 2020</strong>
&nbsp; <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/6.8/common/009_exit.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p010_smtpd">
<strong>010: RELIABILITY FIX: December 24, 2020</strong>
&nbsp; <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/6.8/common/010_smtpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p011_nd6">
<strong>011: RELIABILITY FIX: January 11, 2021</strong>
&nbsp; <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/6.8/common/011_nd6.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p012_carp">
<strong>012: RELIABILITY FIX: January 13, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Use of bpf(4) on a carp interface could result in a use after free
error.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/012_carp.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p013_libressl">
<strong>013: RELIABILITY FIX: February 3, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Various interoperability issues and memory leaks were discovered in
libcrypto and libssl.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/013_libressl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p014_pffrag">
<strong>014: SECURITY FIX: February 24, 2021</strong>
&nbsp; <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/6.8/common/014_pffrag.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p015_sshagent">
<strong>015: SECURITY FIX: March 4, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Double free in ssh-agent(1)
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/015_sshagent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p016_npppd">
<strong>016: SECURITY FIX: March 9, 2021</strong>
&nbsp; <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/6.8/common/016_npppd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p017_libssl">
<strong>017: SECURITY FIX: March 15, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
A TLS client using session resumption may cause a use-after-free.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/017_libssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p018_xi">
<strong>018: SECURITY FIX: April 13, 2021</strong>
&nbsp; <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/6.8/common/018_xi.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p019_libx11">
<strong>019: SECURITY FIX: May 18, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Request length checks were missing in libX11.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/019_libx11.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p020_vmd">
<strong>020: SECURITY FIX: May 18, 2021</strong>
&nbsp; <i>amd64</i>
<br>
vmd guest virtio drivers could cause stack overflows by crafting invalid
virtio descriptor lengths.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/020_vmd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p021_net80211">
<strong>021: SECURITY FIX: May 21, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Insufficient validation of A-MSDUs and fragmented 802.11 frames could
be abused to inject arbitrary frames.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/021_net80211.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p022_pmapglobal">
<strong>022: RELIABILITY FIX: May 24, 2021</strong>
&nbsp; <i>amd64</i>
<br>
Recent Intel machines could crash or hang as global mappings were
not flushed from TLB.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/022_pmapglobal.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p023_cpuswitch">
<strong>023: RELIABILITY FIX: June 8, 2021</strong>
&nbsp; <i>amd64</i>
<br>
Recent Intel or any AMD machines could crash as the kernel did not
flush all TLBs that multi threaded processes require.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/023_cpuswitch.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p024_inteldrm">
<strong>024_inteldrm: RELIABILITY FIX: June 8, 2021</strong>
&nbsp; <i>amd64, i386</i>
<br>
Disable PPGTT on Intel machines with cherryview/braswell graphics
to avoid memory corruption.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/024_inteldrm.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p025_vmd">
<strong>025: SECURITY FIX: June 9, 2021</strong>
&nbsp; <i>amd64</i>
<br>
vmd guests could cause stack overflows by crafting malicious dhcp
requests when using local interfaces.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/025_vmd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p026_strchr">
<strong>026: SECURITY FIX: July 25, 2021</strong>
&nbsp; <i>mips64</i>
<br>
On mips64, the strchr/index/strrchr/rindex functions in libc handled
signed characters incorrectly.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/026_strchr.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p027_vmparam">
<strong>027: RELIABILITY FIX: August 04, 2021</strong>
&nbsp; <i>sparc64</i>
<br>
A missaligned address could trigger a kernel assert and panic the kernel.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/027_vmparam.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p028_wg">
<strong>028: RELIABILITY FIX: August 11, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
In a specific configuration, wg(4) leaked mbufs.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/028_wg.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p029_x509">
<strong>029: SECURITY FIX: August 20, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
In LibreSSL, printing a certificate can result in a crash in
X509_CERT_AUX_print().
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/029_x509.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="030_sshd">
<strong>030: SECURITY FIX: September 27, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
sshd(8) failed to clear supplemental groups when executing an
AuthorizedUsersCommand or AuthorizedPrincipalsCommand helper program.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/030_sshd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="031_x509">
<strong>031: SECURITY FIX: September 27, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
In libcrypto, part of LibreSSL, a stack overread could occur when
checking X.509 name constraints.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/031_x509.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="032_cert">
<strong>032: RELIABILITY FIX: September 30, 2021</strong>
&nbsp; <i>All architectures</i>
<br>
Compensate for the expiry of the DST Root X3 certificate.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/032_cert.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>