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1.1       deraadt     5: <title>OpenBSD 6.3 Errata</title>
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                     12:                        IMPORTANT REMINDER
                     13:        IF YOU ADD A NEW ERRATUM, MAIL THE PATCH TO TECH AND ANNOUNCE
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                     15:
1.35      bentley    16: <h2 id=OpenBSD>
1.1       deraadt    17: <a href="index.html">
1.35      bentley    18: <i>Open</i><b>BSD</b></a>
                     19: 6.3 Errata
1.1       deraadt    20: </h2>
                     21: <hr>
                     22:
                     23: For errata on a certain release, click below:<br>
1.38      schwarze   24: <a href="errata20.html">2.0</a>,
1.1       deraadt    25: <a href="errata21.html">2.1</a>,
                     26: <a href="errata22.html">2.2</a>,
                     27: <a href="errata23.html">2.3</a>,
                     28: <a href="errata24.html">2.4</a>,
                     29: <a href="errata25.html">2.5</a>,
                     30: <a href="errata26.html">2.6</a>,
                     31: <a href="errata27.html">2.7</a>,
                     32: <a href="errata28.html">2.8</a>,
                     33: <a href="errata29.html">2.9</a>,
                     34: <a href="errata30.html">3.0</a>,
                     35: <a href="errata31.html">3.1</a>,
                     36: <a href="errata32.html">3.2</a>,
                     37: <a href="errata33.html">3.3</a>,
                     38: <a href="errata34.html">3.4</a>,
                     39: <a href="errata35.html">3.5</a>,
1.38      schwarze   40: <br>
1.1       deraadt    41: <a href="errata36.html">3.6</a>,
                     42: <a href="errata37.html">3.7</a>,
                     43: <a href="errata38.html">3.8</a>,
                     44: <a href="errata39.html">3.9</a>,
                     45: <a href="errata40.html">4.0</a>,
                     46: <a href="errata41.html">4.1</a>,
                     47: <a href="errata42.html">4.2</a>,
                     48: <a href="errata43.html">4.3</a>,
                     49: <a href="errata44.html">4.4</a>,
                     50: <a href="errata45.html">4.5</a>,
                     51: <a href="errata46.html">4.6</a>,
                     52: <a href="errata47.html">4.7</a>,
                     53: <a href="errata48.html">4.8</a>,
                     54: <a href="errata49.html">4.9</a>,
                     55: <a href="errata50.html">5.0</a>,
                     56: <a href="errata51.html">5.1</a>,
1.38      schwarze   57: <br>
1.1       deraadt    58: <a href="errata52.html">5.2</a>,
                     59: <a href="errata53.html">5.3</a>,
                     60: <a href="errata54.html">5.4</a>,
                     61: <a href="errata55.html">5.5</a>,
                     62: <a href="errata56.html">5.6</a>,
                     63: <a href="errata57.html">5.7</a>,
                     64: <a href="errata58.html">5.8</a>,
                     65: <a href="errata59.html">5.9</a>,
                     66: <a href="errata60.html">6.0</a>,
                     67: <a href="errata61.html">6.1</a>,
1.19      deraadt    68: <a href="errata62.html">6.2</a>,
1.32      deraadt    69: <a href="errata64.html">6.4</a>,
1.37      deraadt    70: <a href="errata65.html">6.5</a>,
1.39      deraadt    71: <a href="errata66.html">6.6</a>,
1.40      deraadt    72: <a href="errata67.html">6.7</a>,
1.41    ! deraadt    73: <a href="errata68.html">6.8</a>,
        !            74: <a href="errata69.html">6.9</a>.
1.1       deraadt    75: <hr>
                     76:
                     77: <p>
                     78: Patches for the OpenBSD base system are distributed as unified diffs.
                     79: Each patch is cryptographically signed with the
                     80: <a href="https://man.openbsd.org/OpenBSD-6.3/signify.1">signify(1)</a> tool and contains
                     81: usage instructions.
                     82: All the following patches are also available in one
                     83: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3.tar.gz">tar.gz file</a>
                     84: for convenience.
                     85:
                     86: <p>
                     87: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
                     88: utility can be used to apply binary updates on the following architectures:
                     89: amd64, i386, arm64.
                     90:
                     91: <p>
                     92: Patches for supported releases are also incorporated into the
1.33      tj         93: <a href="stable.html">-stable branch</a>.
1.1       deraadt    94:
                     95: <hr>
                     96:
                     97: <ul>
                     98:
1.2       afresh1    99: <li id="p001_perl">
1.35      bentley   100: <strong>001: SECURITY FIX: April 14, 2018</strong>
1.2       afresh1   101: &nbsp; <i>All architectures</i>
                    102: <br>
                    103: Heap overflows exist in perl which can lead to segmentation faults,
                    104: crashes, and reading memory past the buffer.
                    105: <br>
                    106: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/001_perl.patch.sig">
                    107: A source code patch exists which remedies this problem.</a>
                    108: <p>
1.1       deraadt   109:
1.4       tj        110: <li id="p002_libtls">
1.35      bentley   111: <strong>002: RELIABILITY FIX: April 21, 2018</strong>
1.3       tj        112: &nbsp; <i>All architectures</i>
                    113: <br>
1.4       tj        114: Additional data is inadvertently removed when private keys are cleared from
                    115: TLS configuration, which can prevent OCSP from functioning correctly.
1.3       tj        116: <br>
1.4       tj        117: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/002_libtls.patch.sig">
1.3       tj        118: A source code patch exists which remedies this problem.</a>
                    119: <p>
                    120:
1.4       tj        121: <li id="p003_arp">
1.35      bentley   122: <strong>003: RELIABILITY FIX: April 21, 2018</strong>
1.3       tj        123: &nbsp; <i>All architectures</i>
                    124: <br>
1.4       tj        125: ARP replies could be sent on the wrong member of a bridge(4) interface.
1.3       tj        126: <br>
1.4       tj        127: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/003_arp.patch.sig">
1.3       tj        128: A source code patch exists which remedies this problem.</a>
                    129: <p>
                    130:
                    131: <li id="p004_gif">
1.35      bentley   132: <strong>004: SECURITY FIX: April 21, 2018</strong>
1.3       tj        133: &nbsp; <i>All architectures</i>
                    134: <br>
                    135: In the gif(4) interface, use the specified protocol for IPv6, plug
                    136: a mbuf leak and avoid a use after free.
                    137: <br>
                    138: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/004_gif.patch.sig">
                    139: A source code patch exists which remedies this problem.</a>
                    140: <p>
                    141:
                    142: <li id="p005_httpd">
1.35      bentley   143: <strong>005: RELIABILITY FIX: April 21, 2018</strong>
1.3       tj        144: &nbsp; <i>All architectures</i>
                    145: <br>
                    146: httpd can leak file descriptors when servicing range requests.
                    147: <br>
                    148: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/005_httpd.patch.sig">
                    149: A source code patch exists which remedies this problem.</a>
                    150: <p>
                    151:
1.5       tj        152: <li id="p006_ipseclen">
1.35      bentley   153: <strong>006: RELIABILITY FIX: May 8, 2018</strong>
1.5       tj        154: &nbsp; <i>All architectures</i>
                    155: <br>
                    156: Incorrect handling of fragmented IPsec packets could result in a system crash.
                    157: <br>
                    158: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/006_ipseclen.patch.sig">
                    159: A source code patch exists which remedies this problem.</a>
                    160: <p>
                    161:
                    162: <li id="p007_libcrypto">
1.35      bentley   163: <strong>007: RELIABILITY FIX: May 8, 2018</strong>
1.5       tj        164: &nbsp; <i>All architectures</i>
                    165: <br>
                    166: Incorrect checks in libcrypto can prevent Diffie-Hellman Exchange operations
                    167: from working.
                    168: <br>
                    169: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/007_libcrypto.patch.sig">
                    170: A source code patch exists which remedies this problem.</a>
                    171: <p>
                    172:
1.6       tj        173: <li id="p008_ipsecout">
1.35      bentley   174: <strong>008: RELIABILITY FIX: May 17, 2018</strong>
1.6       tj        175: &nbsp; <i>All architectures</i>
                    176: <br>
                    177: A malicious packet can cause a kernel crash when using IPsec over IPv6.
                    178: <br>
                    179: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/008_ipsecout.patch.sig">
                    180: A source code patch exists which remedies this problem.</a>
                    181: <p>
                    182:
1.7       tb        183: <li id="p009_libcrypto">
1.35      bentley   184: <strong>009: SECURITY FIX: June 14, 2018</strong>
1.7       tb        185: &nbsp; <i>All architectures</i>
                    186: <br>
                    187: DSA and ECDSA signature generation can potentially leak secret information
                    188: to a timing side-channel attack.
                    189: <br>
                    190: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/009_libcrypto.patch.sig">
                    191: A source code patch exists which remedies this problem.</a>
                    192: <p>
                    193:
1.8       tj        194: <li id="p010_intelfpu">
1.35      bentley   195: <strong>010: SECURITY FIX: June 17, 2018</strong>
1.8       tj        196: &nbsp; <i>amd64</i>
                    197: <br>
                    198: Intel CPUs speculatively access FPU registers even when the FPU is disabled,
                    199: so data (including AES keys) from previous contexts could be discovered
                    200: if using the lazy-save approach.
                    201: <br>
                    202: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/010_intelfpu.patch.sig">
                    203: A source code patch exists which remedies this problem.</a>
                    204: <p>
                    205:
1.9       afresh1   206: <li id="p011_perl">
1.35      bentley   207: <strong>011: SECURITY FIX: June 21, 2018</strong>
1.9       afresh1   208: &nbsp; <i>All architectures</i>
                    209: <br>
                    210: Perl's Archive::Tar module could be made to write files outside of
                    211: its working directory.
                    212: <br>
                    213: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/011_perl.patch.sig">
                    214: A source code patch exists which remedies this problem.</a>
                    215: <p>
                    216:
1.10      tj        217: <li id="p012_execsize">
1.35      bentley   218: <strong>012: RELIABILITY FIX: July 25, 2018</strong>
1.10      tj        219: &nbsp; <i>All architectures</i>
                    220: <br>
                    221: A regular user could trigger a kernel panic by executing an invalid
                    222: ELF binary.
                    223: <br>
                    224: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/012_execsize.patch.sig">
                    225: A source code patch exists which remedies this problem.</a>
                    226: <p>
                    227:
                    228: <li id="p013_ipsecexpire">
1.35      bentley   229: <strong>013: RELIABILITY FIX: July 25, 2018</strong>
1.10      tj        230: &nbsp; <i>All architectures</i>
                    231: <br>
                    232: When an IPsec key expired, the kernel could panic due to unfinished
                    233: timeout tasks.
                    234: <br>
                    235: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/013_ipsecexpire.patch.sig">
                    236: A source code patch exists which remedies this problem.</a>
                    237: <p>
                    238:
1.11      tj        239: <li id="p014_amdlfence">
1.35      bentley   240: <strong>014: SECURITY FIX: July 31, 2018</strong>
1.11      tj        241: &nbsp; <i>amd64 and i386</i>
                    242: <br>
                    243: On AMD CPUs, set a chicken bit which turns LFENCE into a serialization
                    244: instruction against speculation.
                    245: <br>
                    246: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/014_amdlfence.patch.sig">
                    247: A source code patch exists which remedies this problem.</a>
                    248: <p>
                    249:
                    250: <li id="p015_ioport">
1.35      bentley   251: <strong>015: SECURITY FIX: July 31, 2018</strong>
1.11      tj        252: &nbsp; <i>i386</i>
                    253: <br>
                    254: IO port permissions were incorrectly restricted.
                    255: <br>
                    256: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig">
                    257: A source code patch exists which remedies this problem.</a>
                    258: <p>
                    259:
1.14      tj        260: <li id="p016_fpuinit">
1.35      bentley   261: <strong>016: RELIABILITY FIX: August 4, 2018</strong>
1.14      tj        262: &nbsp; <i>amd64</i>
                    263: <br>
                    264: Incorrect initialization of the FPU caused floating point exceptions
                    265: when running on Xen.
                    266: <br>
                    267: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/016_fpuinit.patch.sig">
                    268: A source code patch exists which remedies this problem.</a>
                    269: <p>
                    270:
1.17      tj        271: <li id="p017_fpufork">
1.35      bentley   272: <strong>017: SECURITY FIX: August 24, 2018</strong>
1.17      tj        273: &nbsp; <i>amd64</i>
                    274: <br>
                    275: State from the FPU of one userland process could be exposed to other processes.
                    276: <br>
                    277: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/017_fpufork.patch.sig">
                    278: A source code patch exists which remedies this problem.</a>
                    279: <p>
                    280:
                    281: <li id="p018_vmml1tf">
1.35      bentley   282: <strong>018: SECURITY FIX: August 24, 2018</strong>
1.17      tj        283: &nbsp; <i>amd64</i>
                    284: <br>
                    285: The Intel L1TF bug allows a vmm guest to read host memory.
                    286: Install the CPU firmware using fw_update(1) and apply this workaround.
                    287: <br>
                    288: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/018_vmml1tf.patch.sig">
                    289: A source code patch exists which remedies this problem.</a>
                    290: <p>
                    291:
1.18      tj        292: <li id="p019_ldtr">
1.35      bentley   293: <strong>019: SECURITY FIX: September 21, 2018</strong>
1.18      tj        294: &nbsp; <i>amd64</i>
                    295: <br>
                    296: On AMD CPUs, LDTR must be managed crossing between VMs.
                    297: <br>
                    298: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/019_ldtr.patch.sig">
                    299: A source code patch exists which remedies this problem.</a>
                    300: <p>
                    301:
1.20      tj        302: <li id="p020_xserver">
1.35      bentley   303: <strong>020: SECURITY FIX: October 25, 2018</strong>
1.20      tj        304: &nbsp; <i>All architectures</i>
                    305: <br>
1.36      deraadt   306: The Xorg X server incorrectly validates certain options, allowing arbitrary
1.20      tj        307: files to be overwritten.
                    308: As an immediate (temporary) workaround, the Xorg binary can be disabled
                    309: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
                    310: <br>
                    311: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/020_xserver.patch.sig">
                    312: A source code patch exists which remedies this problem.</a>
                    313: <p>
                    314:
1.21      tj        315: <li id="p021_syspatch">
1.35      bentley   316: <strong>021: RELIABILITY FIX: November 2, 2018</strong>
1.21      tj        317: &nbsp; <i>i386, amd64, arm64</i>
                    318: <br>
                    319: The syspatch utility incorrectly handles symbolic links.
                    320: <br>
                    321: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/021_syspatch.patch.sig">
                    322: A source code patch exists which remedies this problem.</a>
                    323: <p>
                    324:
1.22      tj        325: <li id="p022_blinding">
1.35      bentley   326: <strong>022: SECURITY FIX: November 17, 2018</strong>
1.22      tj        327: &nbsp; <i>All architectures</i>
                    328: <br>
                    329: Timing side channels may leak information about DSA and ECDSA private keys.
                    330: <br>
                    331: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/022_blinding.patch.sig">
                    332: A source code patch exists which remedies this problem.</a>
                    333: <p>
                    334:
                    335: <li id="p023_lockf">
1.35      bentley   336: <strong>023: RELIABILITY FIX: November 17, 2018</strong>
1.22      tj        337: &nbsp; <i>All architectures</i>
                    338: <br>
                    339: A recent change to POSIX file locks could cause incorrect results
                    340: during lock acquisition.
                    341: <br>
                    342: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/023_lockf.patch.sig">
                    343: A source code patch exists which remedies this problem.</a>
                    344: <p>
                    345:
1.23      tj        346: <li id="p024_perl">
1.35      bentley   347: <strong>024: SECURITY FIX: November 29, 2018</strong>
1.23      tj        348: &nbsp; <i>All architectures</i>
                    349: <br>
                    350: Various overflows exist in perl.
                    351: <br>
                    352: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/024_perl.patch.sig">
                    353: A source code patch exists which remedies this problem.</a>
                    354: <p>
                    355:
                    356: <li id="p025_uipc">
1.35      bentley   357: <strong>025: RELIABILITY FIX: November 29, 2018</strong>
1.23      tj        358: &nbsp; <i>All architectures</i>
                    359: <br>
                    360: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
                    361: attempt excessive memory allocations leading to a crash.
                    362: <br>
                    363: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/025_uipc.patch.sig">
                    364: A source code patch exists which remedies this problem.</a>
                    365: <p>
                    366:
1.24      tj        367: <li id="p026_recvwait">
1.35      bentley   368: <strong>026: RELIABILITY FIX: December 20, 2018</strong>
1.24      tj        369: &nbsp; <i>All architectures</i>
                    370: <br>
                    371: While recv(2) with the MSG_WAITALL flag was receiving control
                    372: messages from a socket, the kernel could panic.
                    373: <br>
                    374: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/026_recvwait.patch.sig">
                    375: A source code patch exists which remedies this problem.</a>
                    376: <p>
                    377:
1.25      tj        378: <li id="p027_pcbopts">
1.35      bentley   379: <strong>027: SECURITY FIX: December 22, 2018</strong>
1.25      tj        380: &nbsp; <i>All architectures</i>
                    381: <br>
                    382: The setsockopt(2) system call could overflow mbuf cluster kernel
                    383: memory by 4 bytes.
                    384: <br>
                    385: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/027_pcbopts.patch.sig">
                    386: A source code patch exists which remedies this problem.</a>
                    387: <p>
                    388:
1.28      tj        389: <li id="p028_mincore">
1.35      bentley   390: <strong>028: SECURITY FIX: February 5, 2019</strong>
1.28      tj        391: &nbsp; <i>All architectures</i>
                    392: <br>
                    393: The mincore() system call can be used to observe memory access patterns
                    394: of other processes.
                    395: <br>
                    396: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/028_mincore.patch.sig">
                    397: A source code patch exists which remedies this problem.</a>
                    398: <p>
                    399:
                    400: <li id="p029_nfs">
1.35      bentley   401: <strong>029: RELIABILITY FIX: February 5, 2019</strong>
1.28      tj        402: &nbsp; <i>All architectures</i>
                    403: <br>
                    404: Missing length checks in the NFS server and client can lead to crashes
                    405: and other errors.
                    406: <br>
                    407: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/029_nfs.patch.sig">
                    408: A source code patch exists which remedies this problem.</a>
                    409: <p>
                    410:
1.29      tj        411: <li id="p030_pf6frag">
1.35      bentley   412: <strong>030: SECURITY FIX: March 1, 2019</strong>
1.29      tj        413: &nbsp; <i>All architectures</i>
                    414: <br>
                    415: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
                    416: <br>
                    417: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/030_pf6frag.patch.sig">
                    418: A source code patch exists which remedies this problem.</a>
                    419: <p>
                    420:
1.30      tj        421: <li id="p031_pficmp">
1.35      bentley   422: <strong>031: SECURITY FIX: March 22, 2019</strong>
1.30      tj        423: &nbsp; <i>All architectures</i>
                    424: <br>
                    425: A state in pf could pass ICMP packets to a destination IP address
                    426: that did not match the state.
                    427: <br>
                    428: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/031_pficmp.patch.sig">
                    429: A source code patch exists which remedies this problem.</a>
                    430: <p>
                    431:
1.31      tj        432: <li id="p032_vmmints">
1.35      bentley   433: <strong>032: SECURITY FIX: March 27, 2019</strong>
1.31      tj        434: &nbsp; <i>amd64 and i386</i>
                    435: <br>
                    436: GDT and IDT limits were improperly restored during VMM context switches.
                    437: <br>
                    438: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/032_vmmints.patch.sig">
                    439: A source code patch exists which remedies this problem.</a>
                    440: <p>
                    441:
1.34      tj        442: <li id="p033_rip6cksum">
1.35      bentley   443: <strong>033: RELIABILITY FIX: May 3, 2019</strong>
1.34      tj        444: &nbsp; <i>All architectures</i>
                    445: <br>
                    446: If a userland program sets the IPv6 checksum offset on a raw socket,
                    447: an incoming packet could crash the kernel.  ospf6d is such a program.
                    448: <br>
                    449: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/033_rip6cksum.patch.sig">
                    450: A source code patch exists which remedies this problem.</a>
                    451: <p>
                    452:
1.1       deraadt   453: </ul>
                    454:
                    455: <hr>