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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>,
1.36 deraadt 76: <a href="errata70.html">7.0</a>,
1.37 deraadt 77: <a href="errata71.html">7.1</a>,
1.38 tj 78: <a href="errata72.html">7.2</a>,
1.39 ! tj 79: <a href="errata73.html">7.3</a>,
! 80: <a href="errata74.html">7.4</a>.
1.1 deraadt 81: <hr>
82:
83: <p>
84: Patches for the OpenBSD base system are distributed as unified diffs.
85: Each patch is cryptographically signed with the
1.3 tb 86: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 87: usage instructions.
88: All the following patches are also available in one
89: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.tar.gz">tar.gz file</a>
90: for convenience.
91:
92: <p>
93: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
94: utility can be used to apply binary updates on the following architectures:
95: amd64, i386, arm64.
96:
97: <p>
98: Patches for supported releases are also incorporated into the
1.29 tj 99: <a href="stable.html">-stable branch</a>.
1.1 deraadt 100:
101: <hr>
102:
103: <ul>
104:
1.4 tj 105: <li id="p001_xserver">
1.19 bentley 106: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 107: <i>All architectures</i>
108: <br>
109: The Xorg X server incorrectly validates certain options, allowing arbitrary
110: files to be overwritten.
111: As an immediate (temporary) workaround, the Xorg binary can be disabled
112: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
113: <br>
114: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
115: A source code patch exists which remedies this problem.</a>
116: <p>
1.1 deraadt 117:
1.5 tj 118: <li id="p002_syspatch">
1.19 bentley 119: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 120: <i>i386, amd64, arm64</i>
121: <br>
122: The syspatch utility incorrectly handles symbolic links.
123: <br>
124: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
125: A source code patch exists which remedies this problem.</a>
126: <p>
127:
1.6 tj 128: <li id="p003_portsmash">
1.19 bentley 129: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 130: <i>All architectures</i>
131: <br>
132: The portsmash vulnerability allows exfiltration of elliptic curve keys.
133: <br>
134: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
135: A source code patch exists which remedies this problem.</a>
136: <p>
137:
138: <li id="p004_lockf">
1.19 bentley 139: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 140: <i>All architectures</i>
141: <br>
142: A recent change to POSIX file locks could cause incorrect results
143: during lock acquisition.
144: <br>
145: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
146: A source code patch exists which remedies this problem.</a>
147: <p>
148:
1.8 tj 149: <li id="p005_perl">
1.19 bentley 150: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 151: <i>All architectures</i>
152: <br>
153: Various overflows exist in perl.
154: <br>
155: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
156: A source code patch exists which remedies this problem.</a>
157: <p>
158:
159: <li id="p006_uipc">
1.19 bentley 160: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 161: <i>All architectures</i>
162: <br>
163: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
164: attempt excessive memory allocations leading to a crash.
165: <br>
166: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
167: A source code patch exists which remedies this problem.</a>
168: <p>
169:
170: <li id="p007_smtpd">
1.19 bentley 171: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 172: <i>All architectures</i>
173: <br>
174: The mail.mda and mail.lmtp delivery agents were not reporting temporary
175: failures correctly, causing smtpd to bounce messages in some cases where
176: it should have retried them.
177: <br>
178: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
179: A source code patch exists which remedies this problem.</a>
180: <p>
181:
182: <li id="p008_qcow2">
1.19 bentley 183: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 184: <i>amd64 and i386</i>
185: <br>
186: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
187: <br>
188: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
189: A source code patch exists which remedies this problem.</a>
190: <p>
191:
1.9 tj 192: <li id="p009_recvwait">
1.19 bentley 193: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 194: <i>All architectures</i>
195: <br>
196: While recv(2) with the MSG_WAITALL flag was receiving control
197: messages from a socket, the kernel could panic.
198: <br>
199: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
200: A source code patch exists which remedies this problem.</a>
201: <p>
202:
1.10 tj 203: <li id="p010_pcbopts">
1.19 bentley 204: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 205: <i>All architectures</i>
206: <br>
207: The setsockopt(2) system call could overflow mbuf cluster kernel
208: memory by 4 bytes.
209: <br>
210: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
211: A source code patch exists which remedies this problem.</a>
212: <p>
213:
1.11 tj 214: <li id="p011_mincore">
1.19 bentley 215: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 216: <i>All architectures</i>
217: <br>
218: The mincore() system call can be used to observe memory access patterns
219: of other processes.
220: <br>
221: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
222: A source code patch exists which remedies this problem.</a>
223: <p>
224:
225: <li id="p012_nfs">
1.19 bentley 226: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 227: <i>All architectures</i>
228: <br>
229: Missing length checks in the NFS server and client can lead to crashes
230: and other errors.
231: <br>
232: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
233: A source code patch exists which remedies this problem.</a>
234: <p>
235:
236: <li id="p013_unveil">
1.19 bentley 237: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 238: <i>All architectures</i>
239: <br>
240: The unveil() system call can leak memory.
241: <br>
242: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
243: A source code patch exists which remedies this problem.</a>
244: <p>
245:
1.12 tj 246: <li id="p014_pf6frag">
1.19 bentley 247: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 248: <i>All architectures</i>
249: <br>
250: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
251: <br>
252: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
253: A source code patch exists which remedies this problem.</a>
254: <p>
255:
1.13 tj 256: <li id="p015_pficmp">
1.19 bentley 257: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 258: <i>All architectures</i>
259: <br>
260: A state in pf could pass ICMP packets to a destination IP address
261: that did not match the state.
262: <br>
263: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
264: A source code patch exists which remedies this problem.</a>
265: <p>
266:
1.14 tj 267: <li id="p016_vmmints">
1.19 bentley 268: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 269: <i>amd64 and i386</i>
270: <br>
271: GDT and IDT limits were improperly restored during VMM context switches.
272: <br>
273: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
274: A source code patch exists which remedies this problem.</a>
275: <p>
276:
1.16 tj 277: <li id="p017_rip6cksum">
1.19 bentley 278: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 279: <i>All architectures</i>
280: <br>
281: If a userland program sets the IPv6 checksum offset on a raw socket,
282: an incoming packet could crash the kernel. ospf6d is such a program.
283: <br>
284: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
285: A source code patch exists which remedies this problem.</a>
286: <p>
287:
1.20 tj 288: <li id="p018_mds">
289: <strong>018: SECURITY FIX: May 29, 2019</strong>
290: <i>amd64</i>
291: <br>
292: Intel CPUs have a cross privilege side-channel attack (MDS).
293: <br>
294: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
295: A source code patch exists which remedies this problem.</a>
296: <p>
297:
1.21 tj 298: <li id="p019_tcpsack">
299: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 300: <i>All architectures</i>
1.21 tj 301: <br>
302: By creating long chains of TCP SACK holes, an attacker could possibly
303: slow down the system temporarily.
304: <br>
305: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
306: A source code patch exists which remedies this problem.</a>
307: <p>
308:
1.23 tj 309: <li id="p020_smtpd">
310: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
311: <i>All architectures</i>
312: <br>
313: smtpd can crash on excessively large input, causing a denial of service.
314: <br>
315: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
316: A source code patch exists which remedies this problem.</a>
317: <p>
318:
1.24 tj 319: <li id="p021_swapgs">
320: <strong>021: SECURITY FIX: August 9, 2019</strong>
321: <i>amd64</i>
322: <br>
323: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
324: <br>
325: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
326: A source code patch exists which remedies this problem.</a>
327: <p>
328:
1.25 tj 329: <li id="p022_resume">
330: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
331: <i>amd64</i>
332: <br>
333: Resume forgot to restore MSR/PAT configuration.
334: <br>
335: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
336: A source code patch exists which remedies this problem.</a>
337: <p>
338:
339: <li id="p023_frag6ecn">
340: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
341: <i>All architectures</i>
342: <br>
343: When processing ECN bits on incoming IPv6 fragments, the kernel
344: could crash. Per default pf fragment reassemble prevents the crash.
345: <br>
346: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
347: A source code patch exists which remedies this problem.</a>
348: <p>
349:
1.26 tj 350: <li id="p024_expat">
351: <strong>024: SECURITY FIX: September 14, 2019</strong>
352: <i>All architectures</i>
353: <br>
354: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
355: <br>
356: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
357: A source code patch exists which remedies this problem.</a>
358: <p>
359:
1.28 tj 360: <li id="p025_unbound">
361: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
362: <i>All architectures</i>
363: <br>
364: Specially crafted queries may crash unwind and unbound.
365: <br>
366: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
367: A source code patch exists which remedies this problem.</a>
368: <p>
369:
370: <li id="p026_dhcpd">
371: <strong>026: SECURITY FIX: October 5, 2019</strong>
372: <i>All architectures</i>
373: <br>
374: dhcpd leaks 4 bytes of stack to the network.
375: <br>
376: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
377: A source code patch exists which remedies this problem.</a>
378: <p>
379:
1.1 deraadt 380: </ul>
381:
382: <hr>
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