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