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1.19 bentley 16: <h2 id=OpenBSD>
1.1 deraadt 17: <a href="index.html">
1.19 bentley 18: <i>Open</i><b>BSD</b></a>
19: 6.4 Errata
1.1 deraadt 20: </h2>
21: <hr>
22:
23: For errata on a certain release, click below:<br>
1.30 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>,
1.30 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>,
1.30 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>,
68: <a href="errata62.html">6.2</a>,
1.15 deraadt 69: <a href="errata63.html">6.3</a>,
1.27 deraadt 70: <a href="errata65.html">6.5</a>,
1.31 deraadt 71: <a href="errata66.html">6.6</a>,
1.32 deraadt 72: <a href="errata67.html">6.7</a>,
1.33 deraadt 73: <a href="errata68.html">6.8</a>,
1.34 tj 74: <br>
1.35 ! 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
1.3 tb 82: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 83: usage instructions.
84: All the following patches are also available in one
85: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.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:
91: amd64, i386, arm64.
92:
93: <p>
94: Patches for supported releases are also incorporated into the
1.29 tj 95: <a href="stable.html">-stable branch</a>.
1.1 deraadt 96:
97: <hr>
98:
99: <ul>
100:
1.4 tj 101: <li id="p001_xserver">
1.19 bentley 102: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 103: <i>All architectures</i>
104: <br>
105: The Xorg X server incorrectly validates certain options, allowing arbitrary
106: files to be overwritten.
107: As an immediate (temporary) workaround, the Xorg binary can be disabled
108: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
109: <br>
110: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
111: A source code patch exists which remedies this problem.</a>
112: <p>
1.1 deraadt 113:
1.5 tj 114: <li id="p002_syspatch">
1.19 bentley 115: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 116: <i>i386, amd64, arm64</i>
117: <br>
118: The syspatch utility incorrectly handles symbolic links.
119: <br>
120: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
121: A source code patch exists which remedies this problem.</a>
122: <p>
123:
1.6 tj 124: <li id="p003_portsmash">
1.19 bentley 125: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 126: <i>All architectures</i>
127: <br>
128: The portsmash vulnerability allows exfiltration of elliptic curve keys.
129: <br>
130: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
131: A source code patch exists which remedies this problem.</a>
132: <p>
133:
134: <li id="p004_lockf">
1.19 bentley 135: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 136: <i>All architectures</i>
137: <br>
138: A recent change to POSIX file locks could cause incorrect results
139: during lock acquisition.
140: <br>
141: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
142: A source code patch exists which remedies this problem.</a>
143: <p>
144:
1.8 tj 145: <li id="p005_perl">
1.19 bentley 146: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 147: <i>All architectures</i>
148: <br>
149: Various overflows exist in perl.
150: <br>
151: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
152: A source code patch exists which remedies this problem.</a>
153: <p>
154:
155: <li id="p006_uipc">
1.19 bentley 156: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 157: <i>All architectures</i>
158: <br>
159: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
160: attempt excessive memory allocations leading to a crash.
161: <br>
162: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
163: A source code patch exists which remedies this problem.</a>
164: <p>
165:
166: <li id="p007_smtpd">
1.19 bentley 167: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 168: <i>All architectures</i>
169: <br>
170: The mail.mda and mail.lmtp delivery agents were not reporting temporary
171: failures correctly, causing smtpd to bounce messages in some cases where
172: it should have retried them.
173: <br>
174: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
175: A source code patch exists which remedies this problem.</a>
176: <p>
177:
178: <li id="p008_qcow2">
1.19 bentley 179: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 180: <i>amd64 and i386</i>
181: <br>
182: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
183: <br>
184: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
185: A source code patch exists which remedies this problem.</a>
186: <p>
187:
1.9 tj 188: <li id="p009_recvwait">
1.19 bentley 189: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 190: <i>All architectures</i>
191: <br>
192: While recv(2) with the MSG_WAITALL flag was receiving control
193: messages from a socket, the kernel could panic.
194: <br>
195: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
196: A source code patch exists which remedies this problem.</a>
197: <p>
198:
1.10 tj 199: <li id="p010_pcbopts">
1.19 bentley 200: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 201: <i>All architectures</i>
202: <br>
203: The setsockopt(2) system call could overflow mbuf cluster kernel
204: memory by 4 bytes.
205: <br>
206: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
207: A source code patch exists which remedies this problem.</a>
208: <p>
209:
1.11 tj 210: <li id="p011_mincore">
1.19 bentley 211: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 212: <i>All architectures</i>
213: <br>
214: The mincore() system call can be used to observe memory access patterns
215: of other processes.
216: <br>
217: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
218: A source code patch exists which remedies this problem.</a>
219: <p>
220:
221: <li id="p012_nfs">
1.19 bentley 222: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 223: <i>All architectures</i>
224: <br>
225: Missing length checks in the NFS server and client can lead to crashes
226: and other errors.
227: <br>
228: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
229: A source code patch exists which remedies this problem.</a>
230: <p>
231:
232: <li id="p013_unveil">
1.19 bentley 233: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 234: <i>All architectures</i>
235: <br>
236: The unveil() system call can leak memory.
237: <br>
238: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
239: A source code patch exists which remedies this problem.</a>
240: <p>
241:
1.12 tj 242: <li id="p014_pf6frag">
1.19 bentley 243: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 244: <i>All architectures</i>
245: <br>
246: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
247: <br>
248: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
249: A source code patch exists which remedies this problem.</a>
250: <p>
251:
1.13 tj 252: <li id="p015_pficmp">
1.19 bentley 253: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 254: <i>All architectures</i>
255: <br>
256: A state in pf could pass ICMP packets to a destination IP address
257: that did not match the state.
258: <br>
259: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
260: A source code patch exists which remedies this problem.</a>
261: <p>
262:
1.14 tj 263: <li id="p016_vmmints">
1.19 bentley 264: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 265: <i>amd64 and i386</i>
266: <br>
267: GDT and IDT limits were improperly restored during VMM context switches.
268: <br>
269: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
270: A source code patch exists which remedies this problem.</a>
271: <p>
272:
1.16 tj 273: <li id="p017_rip6cksum">
1.19 bentley 274: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 275: <i>All architectures</i>
276: <br>
277: If a userland program sets the IPv6 checksum offset on a raw socket,
278: an incoming packet could crash the kernel. ospf6d is such a program.
279: <br>
280: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
281: A source code patch exists which remedies this problem.</a>
282: <p>
283:
1.20 tj 284: <li id="p018_mds">
285: <strong>018: SECURITY FIX: May 29, 2019</strong>
286: <i>amd64</i>
287: <br>
288: Intel CPUs have a cross privilege side-channel attack (MDS).
289: <br>
290: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
291: A source code patch exists which remedies this problem.</a>
292: <p>
293:
1.21 tj 294: <li id="p019_tcpsack">
295: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 296: <i>All architectures</i>
1.21 tj 297: <br>
298: By creating long chains of TCP SACK holes, an attacker could possibly
299: slow down the system temporarily.
300: <br>
301: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
302: A source code patch exists which remedies this problem.</a>
303: <p>
304:
1.23 tj 305: <li id="p020_smtpd">
306: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
307: <i>All architectures</i>
308: <br>
309: smtpd can crash on excessively large input, causing a denial of service.
310: <br>
311: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
312: A source code patch exists which remedies this problem.</a>
313: <p>
314:
1.24 tj 315: <li id="p021_swapgs">
316: <strong>021: SECURITY FIX: August 9, 2019</strong>
317: <i>amd64</i>
318: <br>
319: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
320: <br>
321: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
322: A source code patch exists which remedies this problem.</a>
323: <p>
324:
1.25 tj 325: <li id="p022_resume">
326: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
327: <i>amd64</i>
328: <br>
329: Resume forgot to restore MSR/PAT configuration.
330: <br>
331: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
332: A source code patch exists which remedies this problem.</a>
333: <p>
334:
335: <li id="p023_frag6ecn">
336: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
337: <i>All architectures</i>
338: <br>
339: When processing ECN bits on incoming IPv6 fragments, the kernel
340: could crash. Per default pf fragment reassemble prevents the crash.
341: <br>
342: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
343: A source code patch exists which remedies this problem.</a>
344: <p>
345:
1.26 tj 346: <li id="p024_expat">
347: <strong>024: SECURITY FIX: September 14, 2019</strong>
348: <i>All architectures</i>
349: <br>
350: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
351: <br>
352: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
353: A source code patch exists which remedies this problem.</a>
354: <p>
355:
1.28 tj 356: <li id="p025_unbound">
357: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
358: <i>All architectures</i>
359: <br>
360: Specially crafted queries may crash unwind and unbound.
361: <br>
362: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
363: A source code patch exists which remedies this problem.</a>
364: <p>
365:
366: <li id="p026_dhcpd">
367: <strong>026: SECURITY FIX: October 5, 2019</strong>
368: <i>All architectures</i>
369: <br>
370: dhcpd leaks 4 bytes of stack to the network.
371: <br>
372: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
373: A source code patch exists which remedies this problem.</a>
374: <p>
375:
1.1 deraadt 376: </ul>
377:
378: <hr>
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