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1.29 bentley 16: <h2 id=OpenBSD>
1.1 deraadt 17: <a href="index.html">
1.29 bentley 18: <i>Open</i><b>BSD</b></a>
19: 6.2 Errata
1.1 deraadt 20: </h2>
21: <hr>
22:
23: For errata on a certain release, click below:<br>
1.31 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>,
1.31 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>,
1.31 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>,
1.11 deraadt 67: <a href="errata61.html">6.1</a>,
1.26 deraadt 68: <a href="errata63.html">6.3</a>,
1.28 deraadt 69: <a href="errata64.html">6.4</a>,
1.30 deraadt 70: <a href="errata65.html">6.5</a>,
1.32 deraadt 71: <a href="errata66.html">6.6</a>,
1.33 deraadt 72: <a href="errata67.html">6.7</a>,
1.34 deraadt 73: <a href="errata68.html">6.8</a>,
1.35 tj 74: <br>
1.36 deraadt 75: <a href="errata69.html">6.9</a>,
1.37 deraadt 76: <a href="errata70.html">7.0</a>,
1.38 deraadt 77: <a href="errata71.html">7.1</a>,
1.39 ! tj 78: <a href="errata72.html">7.2</a>,
! 79: <a href="errata73.html">7.3</a>.
1.1 deraadt 80: <hr>
81:
82: <p>
83: Patches for the OpenBSD base system are distributed as unified diffs.
84: Each patch is cryptographically signed with the
85: <a href="https://man.openbsd.org/OpenBSD-6.2/signify.1">signify(1)</a> tool and contains
86: usage instructions.
87: All the following patches are also available in one
88: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2.tar.gz">tar.gz file</a>
89: for convenience.
90:
91: <p>
92: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
93: utility can be used to apply binary updates on the following architectures:
1.3 tj 94: amd64, i386, arm64.
1.1 deraadt 95:
96: <p>
97: Patches for supported releases are also incorporated into the
1.27 tj 98: <a href="stable.html">-stable branch</a>.
1.1 deraadt 99:
100: <hr>
101:
102: <ul>
103:
1.2 bluhm 104: <li id="p001_tcb_invalid">
1.29 bentley 105: <strong>001: RELIABILITY FIX: October 13, 2017</strong>
1.2 bluhm 106: <i>amd64</i>
107: <br>
108: A local user could trigger a kernel panic by using an invalid TCB value.
109: <br>
110: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/001_tcb_invalid.patch.sig">
1.3 tj 111: A source code patch exists which remedies this problem.</a>
112: <p>
113:
114: <li id="p002_fktrace">
1.29 bentley 115: <strong>002: SECURITY FIX: December 1, 2017</strong>
1.3 tj 116: <i>All architectures</i>
117: <br>
118: The fktrace(2) system call had insufficient security checks.
119: <br>
120: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/002_fktrace.patch.sig">
1.2 bluhm 121: A source code patch exists which remedies this problem.</a>
122: <p>
1.1 deraadt 123:
1.4 tj 124: <li id="p003_mpls">
1.29 bentley 125: <strong>003: RELIABILITY FIX: December 10, 2017</strong>
1.4 tj 126: <i>All architectures</i>
127: <br>
128: A number of bugs were discovered in the MPLS stack that can be used to
129: remotely trigger kernel crashes.
130: <br>
131: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/003_mpls.patch.sig">
132: A source code patch exists which remedies this problem.</a>
133: <p>
134:
1.5 tj 135: <li id="p004_libssl">
1.29 bentley 136: <strong>004: RELIABILITY FIX: January 14, 2018</strong>
1.5 tj 137: <i>All architectures</i>
138: <br>
139: An incorrect TLS extensions block is generated when no extensions are present,
140: which can result in handshake failures.
141: <br>
142: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/004_libssl.patch.sig">
143: A source code patch exists which remedies this problem.</a>
144: <p>
145:
1.6 tj 146: <li id="p005_ahopts">
1.29 bentley 147: <strong>005: RELIABILITY FIX: February 2, 2018</strong>
1.6 tj 148: <i>All architectures</i>
149: <br>
150: Specially crafted IPsec AH packets with IP options or IPv6 extension
151: headers could crash or hang the kernel.
152: <br>
153: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/005_ahopts.patch.sig">
154: A source code patch exists which remedies this problem.</a>
155: <p>
156:
157: <li id="p006_prevhdr">
1.29 bentley 158: <strong>006: RELIABILITY FIX: February 2, 2018</strong>
1.6 tj 159: <i>All architectures</i>
160: <br>
161: Processing IPv6 fragments could incorrectly access memory of an mbuf
162: chain that is not within an mbuf. This may crash the kernel.
163: <br>
164: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/006_prevhdr.patch.sig">
165: A source code patch exists which remedies this problem.</a>
166: <p>
167:
168: <li id="p007_etherip">
1.29 bentley 169: <strong>007: SECURITY FIX: February 2, 2018</strong>
1.6 tj 170: <i>All architectures</i>
171: <br>
172: If the EtherIP tunnel protocol was disabled, IPv6 packets were not
173: discarded properly. This causes a double free in the kernel.
174: <br>
175: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/007_etherip.patch.sig">
176: A source code patch exists which remedies this problem.</a>
177: <p>
178:
1.7 tj 179: <li id="p008_unbound">
1.29 bentley 180: <strong>008: SECURITY FIX: February 8, 2018</strong>
1.7 tj 181: <i>All architectures</i>
182: <br>
183: A flaw was found in the way unbound validated wildcard-synthesized
184: NSEC records. An improperly validated wildcard NSEC record could be
185: used to prove the non-existence (NXDOMAIN answer) of an existing
186: wildcard record, or trick unbound into accepting a NODATA proof.
187: <br>
188: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/008_unbound.patch.sig">
189: A source code patch exists which remedies this problem.</a>
190: <p>
191:
1.9 tj 192: <li id="p009_meltdown">
1.29 bentley 193: <strong>009: SECURITY FIX: March 1, 2018</strong>
1.9 tj 194: <i>amd64</i>
195: <br>
196: Intel CPUs contain a speculative execution flaw called Meltdown which
197: allows userspace programs to access kernel memory.
198: <br>
199: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/009_meltdown.patch.sig">
200: A complex workaround solves this problem.</a>
201: <p>
202:
1.10 tj 203: <li id="p010_ahauth">
1.29 bentley 204: <strong>010: RELIABILITY FIX: March 20, 2018</strong>
1.10 tj 205: <i>All architectures</i>
206: <br>
207: The IPsec AH header could be longer than the network packet, resulting in
208: a kernel crash.
209: <br>
210: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/010_ahauth.patch.sig">
211: A source code patch exists which remedies this problem.</a>
212: <p>
213:
1.12 afresh1 214: <li id="p011_perl">
1.29 bentley 215: <strong>011: SECURITY FIX: April 14, 2018</strong>
1.12 afresh1 216: <i>All architectures</i>
217: <br>
218: Heap overflows exist in perl which can lead to segmentation faults,
219: crashes, and reading memory past the buffer.
220: <br>
221: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/011_perl.patch.sig">
222: A source code patch exists which remedies this problem.</a>
223: <p>
224:
1.13 tj 225: <li id="p012_httpd">
1.29 bentley 226: <strong>012: RELIABILITY FIX: April 21, 2018</strong>
1.13 tj 227: <i>All architectures</i>
228: <br>
229: httpd can leak file descriptors when servicing range requests.
230: <br>
231: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/012_httpd.patch.sig">
232: A source code patch exists which remedies this problem.</a>
233: <p>
234:
1.14 tj 235: <li id="p013_ipseclen">
1.29 bentley 236: <strong>013: RELIABILITY FIX: May 8, 2018</strong>
1.14 tj 237: <i>All architectures</i>
238: <br>
239: Incorrect handling of fragmented IPsec packets could result in a system crash.
240: <br>
241: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/013_ipseclen.patch.sig">
242: A source code patch exists which remedies this problem.</a>
243: <p>
244:
1.15 tj 245: <li id="p014_ipsecout">
1.29 bentley 246: <strong>014: RELIABILITY FIX: May 17, 2018</strong>
1.15 tj 247: <i>All architectures</i>
248: <br>
249: A malicious packet can cause a kernel crash when using IPsec over IPv6.
250: <br>
251: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/014_ipsecout.patch.sig">
252: A source code patch exists which remedies this problem.</a>
253: <p>
254:
1.16 tb 255: <li id="p015_libcrypto">
1.29 bentley 256: <strong>015: SECURITY FIX: June 14, 2018</strong>
1.16 tb 257: <i>All architectures</i>
258: <br>
259: DSA and ECDSA signature generation can potentially leak secret information
260: to a timing side-channel attack.
261: <br>
262: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/015_libcrypto.patch.sig">
263: A source code patch exists which remedies this problem.</a>
264: <p>
265:
1.17 afresh1 266: <li id="p016_perl">
1.29 bentley 267: <strong>016: SECURITY FIX: June 21, 2018</strong>
1.17 afresh1 268: <i>All architectures</i>
269: <br>
270: Perl's Archive::Tar module could be made to write files outside of
271: its working directory.
272: <br>
273: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/016_perl.patch.sig">
274: A source code patch exists which remedies this problem.</a>
275: <p>
276:
1.18 tj 277: <li id="p017_intelfpu">
1.29 bentley 278: <strong>017: SECURITY FIX: June 21, 2018</strong>
1.18 tj 279: <i>amd64</i>
280: <br>
281: Intel CPUs speculatively access FPU registers even when the FPU is disabled,
282: so data (including AES keys) from previous contexts could be discovered
283: if using the lazy-save approach.
284: <br>
285: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/017_intelfpu.patch.sig">
286: A source code patch exists which remedies this problem.</a>
287: <p>
288:
1.19 tj 289: <li id="p018_execsize">
1.29 bentley 290: <strong>018: RELIABILITY FIX: July 25, 2018</strong>
1.19 tj 291: <i>All architectures</i>
292: <br>
293: A regular user could trigger a kernel panic by executing an invalid
294: ELF binary.
295: <br>
296: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/018_execsize.patch.sig">
297: A source code patch exists which remedies this problem.</a>
298: <p>
299:
1.20 tj 300: <li id="p019_amdlfence">
1.29 bentley 301: <strong>019: SECURITY FIX: July 31, 2018</strong>
1.20 tj 302: <i>amd64 and i386</i>
303: <br>
304: On AMD CPUs, set a chicken bit which turns LFENCE into a serialization
305: instruction against speculation.
306: <br>
307: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/019_amdlfence.patch.sig">
308: A source code patch exists which remedies this problem.</a>
309: <p>
310:
311: <li id="p020_ioport">
1.29 bentley 312: <strong>020: SECURITY FIX: July 31, 2018</strong>
1.20 tj 313: <i>i386</i>
314: <br>
315: IO port permissions were incorrectly restricted.
316: <br>
317: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig">
318: A source code patch exists which remedies this problem.</a>
319: <p>
320:
1.21 tj 321: <li id="p021_fpuinit">
1.29 bentley 322: <strong>021: RELIABILITY FIX: August 4, 2018</strong>
1.21 tj 323: <i>amd64</i>
324: <br>
325: Incorrect initialization of the FPU caused floating point exceptions
326: when running on Xen.
327: <br>
328: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/021_fpuinit.patch.sig">
329: A source code patch exists which remedies this problem.</a>
330: <p>
331:
1.24 tj 332: <li id="p022_fpufork">
1.29 bentley 333: <strong>022: SECURITY FIX: August 24, 2018</strong>
1.24 tj 334: <i>amd64</i>
335: <br>
336: State from the FPU of one userland process could be exposed to other processes.
337: <br>
338: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/022_fpufork.patch.sig">
339: A source code patch exists which remedies this problem.</a>
340: <p>
341:
342: <li id="p023_vmml1tf">
1.29 bentley 343: <strong>023: SECURITY FIX: August 24, 2018</strong>
1.24 tj 344: <i>amd64</i>
345: <br>
346: The Intel L1TF bug allows a vmm guest to read host memory.
347: Install the CPU firmware using fw_update(1), and apply this workaround.
348: <br>
349: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/023_vmml1tf.patch.sig">
350: A source code patch exists which remedies this problem.</a>
351: <p>
352:
1.25 tj 353: <li id="p024_ldtr">
1.29 bentley 354: <strong>024: SECURITY FIX: September 21, 2018</strong>
1.25 tj 355: <i>amd64</i>
356: <br>
357: On AMD CPUs, LDTR must be managed crossing between VMs.
358: <br>
359: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/024_ldtr.patch.sig">
360: A source code patch exists which remedies this problem.</a>
361: <p>
362:
1.1 deraadt 363: </ul>
364:
365: <hr>
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