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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
7.3 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="errata68.html">6.8</a>,
<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="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-7.3/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/7.3.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>.

<hr>

<ul>

<li id="p001_bgpd">
<strong>001: RELIABILITY FIX: May 3, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
A new ASPA object appeared in the RPKI ecosystem and exposed bugs in
bgpd(8) and rpki-client(8).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/001_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p002_bgpd">
<strong>002: RELIABILITY FIX: May 16, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Avoid fatal errors in bgpd(8) due to incorrect refcounting and mishandling
of ASPA objects. Fix bgpctl(8) 'show rib in' by renaming 'invalid' into
'disqualified'.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/002_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p003_rpki">
<strong>003: RELIABILITY FIX: May 26, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
IP address inheritance was handled incorrectly in rpki-client(8).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/003_rpki.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p004_ssl">
<strong>004: SECURITY FIX: May 26, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
A double free or use after free could occur after SSL_clear(3).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p005_libx11">
<strong>005: SECURITY FIX: June 15, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
libX11 CVE-2023-3138 Missing checks in XQueryExtension() return values.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/005_libx11.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p006_bgpd">
<strong>006: RELIABILITY FIX: July 12, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Incorrect length handling of path attributes in bgpd(8) can lead to a
session reset.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p007_httpd">
<strong>007: RELIABILITY FIX: July 12, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
A malformed HTTP request can crash httpd(8), if fastcgi is in use.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/007_httpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p008_elf">
<strong>008: RELIABILITY FIX: July 12, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Incomplete validation of ELF headers in execve(2).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/008_elf.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p009_bgpd">
<strong>009: RELIABILITY FIX: July 12, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
When tracking nexthops over IPv6 multipath routes, or when receiving
a NOTIFICATION while reaching an internal limit, bgpd(8) could crash.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/009_bgpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p010_ssh_agent">
<strong>010: SECURITY FIX: July 19, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
In ssh-agent(1)'s PKCS#11 provider support, remote execution was
possible due to controllable access in low-quality libraries. In
addition to fixing this, the ability to remotely load PKCS#11
libraries is now disabled by default (re-enable with
'-Oallow-remote-pkcs11').
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/010_ssh_agent.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p011_amdcpu">
<strong>011: SECURITY FIX: July 24, 2023</strong>
&nbsp; <i>amd64 i386</i>
<br>
Workaround for Zenbleed AMD cpu problem. For i386 and amd64 platforms.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/011_amdcpu.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p012_amdfirmware">
<strong>012: SECURITY FIX: July 24, 2023</strong>
&nbsp; <i>amd64 i386</i>
<br>
Add firmware for AMD cpus, to repair past or potential future bugs.
For i386 and amd64 platforms.
<p>
After this step, "fw_update" and "installboot" must be run.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/012_amdfirmware.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p013_amdcpufirmware">
<strong>013: SECURITY FIX: July 24, 2023</strong>
&nbsp; <i>amd64 i386</i>
<br>
Install firmware updates for AMD cpus, to repair past or potential future bugs.
For i386 and amd64 platforms.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/013_amdcpufirmware.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p014_wscons">
<strong>014: RELIABILITY FIX: July 24, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Missing bounds check in console terminal emulation could cause a kernel
crash after receiving specially crafted escape sequences.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/014_wscons.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p015_hvamdcpu">
<strong>015: RELIABILITY FIX: July 25, 2023</strong>
&nbsp; <i>amd64 i386</i>
<br>
Some hypervisors remain unpatched for writes to Zenbleed DE_CFG bit,
so skip it.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/015_hvamdcpu.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p016_npppd">
<strong>016: SECURITY FIX: September 21, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
npppd(8) could crash by a l2tp message which has an AVP with wrong
length.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/016_npppd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p017_xlibs">
<strong>017: SECURITY FIX: October 3, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Fix several input validation errors in libX11 and libXpm.
CVE-2023-43785 CVE-2023-43786 CVE-2023-43787 CVE-2023-43788 CVE-2023-43789
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/017_xlibs.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p018_xserver">
<strong>018: SECURITY FIX: October 25, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Fix several input validation errors in the X server.
CVE-2023-5367 CVE-2023-5380 CVE-2023-5574
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/018_xserver.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p019_msplit">
<strong>019: SECURITY FIX: October 25, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
A network buffer that had to be split at certain length could crash
the kernel.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p020_httpd">
<strong>020: RELIABILITY FIX: November 21, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
httpd(8): Avoid a NULL dereference when handling a malformed fastcgi request.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/020_httpd.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p021_perl">
<strong>021: SECURITY FIX: November 29, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
A crafted regular expression when compiled by perl can cause a
one-byte attacker controlled buffer overflow in a heap allocated
buffer. CVE-2023-47038
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/021_perl.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p022_vmm">
<strong>022: RELIABILITY FIX: December 10, 2023</strong>
&nbsp; <i>amd64</i>
<br>
vmm(4) restored stale GDTR & TR values on vm exit which could lead to
memory corruption or kernel deadlocks.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/022_vmm.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p023_xserver">
<strong>023: SECURITY FIX: December 14, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
Fix out of bounds memory accesses in XRandR and XKB X server extensions.
CVE-2023-6377 CVE-2023-6478
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/023_xserver.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p024_ssh">
<strong>024: SECURITY FIX: December 18, 2023</strong>
&nbsp; <i>All architectures</i>
<br>
An SSH protocol weakness (the Terrapin Attack) exists that allows an
on-path adversary to disable keystroke timing obfuscation.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/024_ssh.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p025_xserver">
<strong>025: SECURITY FIX: January 16, 2024</strong>
&nbsp; <i>All architectures</i>
<br>
Fix multiple xserver heap buffer overflows, out of bounds memory accesses and
memory corruption.
CVE-2023-6816 CVE-2024-0229 CVE-2024-21885 CVE-2024-21886
CVE-2024-0408 CVE-2024-0409
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/025_xserver.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p026_unbound">
<strong>026: SECURITY FIX: February 13, 2024</strong>
&nbsp; <i>All architectures</i>
<br>
DNSSEC protocol vulnerabilities have been discovered that render
various DNSSEC validators victims of Denial Of Service while trying
to validate specially crafted DNSSEC responses.
Fix CVE-2023-50387 and CVE-2023-50868 in unwind(8) and unbound(8).
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/026_unbound.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p027_expat">
<strong>027: SECURITY FIX: March 18, 2024</strong>
&nbsp; <i>All architectures</i>
<br>
In libexpat fix billion laughs attack vulnerability CVE-2024-28757.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/027_expat.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

<li id="p028_xserver">
<strong>028: SECURITY FIX: April 8, 2024</strong>
&nbsp; <i>All architectures</i>
<br>
Fix multiple heap buffer overread and data leakage in the X11 server
Xi extension and use after free in the Render extension.
CVE-2024-31080 CVE-2024-31081 CVE-2024-31083
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/028_xserver.patch.sig">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>