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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>,
1.40 ! tj 80: <a href="errata74.html">7.4</a>,
! 81: <a href="errata75.html">7.5</a>.
1.1 deraadt 82: <hr>
83:
84: <p>
85: Patches for the OpenBSD base system are distributed as unified diffs.
86: Each patch is cryptographically signed with the
1.3 tb 87: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 88: usage instructions.
89: All the following patches are also available in one
90: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.tar.gz">tar.gz file</a>
91: for convenience.
92:
93: <p>
94: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
95: utility can be used to apply binary updates on the following architectures:
96: amd64, i386, arm64.
97:
98: <p>
99: Patches for supported releases are also incorporated into the
1.29 tj 100: <a href="stable.html">-stable branch</a>.
1.1 deraadt 101:
102: <hr>
103:
104: <ul>
105:
1.4 tj 106: <li id="p001_xserver">
1.19 bentley 107: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 108: <i>All architectures</i>
109: <br>
110: The Xorg X server incorrectly validates certain options, allowing arbitrary
111: files to be overwritten.
112: As an immediate (temporary) workaround, the Xorg binary can be disabled
113: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
114: <br>
115: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
116: A source code patch exists which remedies this problem.</a>
117: <p>
1.1 deraadt 118:
1.5 tj 119: <li id="p002_syspatch">
1.19 bentley 120: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 121: <i>i386, amd64, arm64</i>
122: <br>
123: The syspatch utility incorrectly handles symbolic links.
124: <br>
125: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
126: A source code patch exists which remedies this problem.</a>
127: <p>
128:
1.6 tj 129: <li id="p003_portsmash">
1.19 bentley 130: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 131: <i>All architectures</i>
132: <br>
133: The portsmash vulnerability allows exfiltration of elliptic curve keys.
134: <br>
135: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
136: A source code patch exists which remedies this problem.</a>
137: <p>
138:
139: <li id="p004_lockf">
1.19 bentley 140: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 141: <i>All architectures</i>
142: <br>
143: A recent change to POSIX file locks could cause incorrect results
144: during lock acquisition.
145: <br>
146: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
147: A source code patch exists which remedies this problem.</a>
148: <p>
149:
1.8 tj 150: <li id="p005_perl">
1.19 bentley 151: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 152: <i>All architectures</i>
153: <br>
154: Various overflows exist in perl.
155: <br>
156: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
157: A source code patch exists which remedies this problem.</a>
158: <p>
159:
160: <li id="p006_uipc">
1.19 bentley 161: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 162: <i>All architectures</i>
163: <br>
164: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
165: attempt excessive memory allocations leading to a crash.
166: <br>
167: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
168: A source code patch exists which remedies this problem.</a>
169: <p>
170:
171: <li id="p007_smtpd">
1.19 bentley 172: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 173: <i>All architectures</i>
174: <br>
175: The mail.mda and mail.lmtp delivery agents were not reporting temporary
176: failures correctly, causing smtpd to bounce messages in some cases where
177: it should have retried them.
178: <br>
179: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
180: A source code patch exists which remedies this problem.</a>
181: <p>
182:
183: <li id="p008_qcow2">
1.19 bentley 184: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 185: <i>amd64 and i386</i>
186: <br>
187: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
188: <br>
189: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
190: A source code patch exists which remedies this problem.</a>
191: <p>
192:
1.9 tj 193: <li id="p009_recvwait">
1.19 bentley 194: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 195: <i>All architectures</i>
196: <br>
197: While recv(2) with the MSG_WAITALL flag was receiving control
198: messages from a socket, the kernel could panic.
199: <br>
200: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
201: A source code patch exists which remedies this problem.</a>
202: <p>
203:
1.10 tj 204: <li id="p010_pcbopts">
1.19 bentley 205: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 206: <i>All architectures</i>
207: <br>
208: The setsockopt(2) system call could overflow mbuf cluster kernel
209: memory by 4 bytes.
210: <br>
211: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
212: A source code patch exists which remedies this problem.</a>
213: <p>
214:
1.11 tj 215: <li id="p011_mincore">
1.19 bentley 216: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 217: <i>All architectures</i>
218: <br>
219: The mincore() system call can be used to observe memory access patterns
220: of other processes.
221: <br>
222: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
223: A source code patch exists which remedies this problem.</a>
224: <p>
225:
226: <li id="p012_nfs">
1.19 bentley 227: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 228: <i>All architectures</i>
229: <br>
230: Missing length checks in the NFS server and client can lead to crashes
231: and other errors.
232: <br>
233: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
234: A source code patch exists which remedies this problem.</a>
235: <p>
236:
237: <li id="p013_unveil">
1.19 bentley 238: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 239: <i>All architectures</i>
240: <br>
241: The unveil() system call can leak memory.
242: <br>
243: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
244: A source code patch exists which remedies this problem.</a>
245: <p>
246:
1.12 tj 247: <li id="p014_pf6frag">
1.19 bentley 248: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 249: <i>All architectures</i>
250: <br>
251: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
252: <br>
253: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
254: A source code patch exists which remedies this problem.</a>
255: <p>
256:
1.13 tj 257: <li id="p015_pficmp">
1.19 bentley 258: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 259: <i>All architectures</i>
260: <br>
261: A state in pf could pass ICMP packets to a destination IP address
262: that did not match the state.
263: <br>
264: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
265: A source code patch exists which remedies this problem.</a>
266: <p>
267:
1.14 tj 268: <li id="p016_vmmints">
1.19 bentley 269: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 270: <i>amd64 and i386</i>
271: <br>
272: GDT and IDT limits were improperly restored during VMM context switches.
273: <br>
274: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
275: A source code patch exists which remedies this problem.</a>
276: <p>
277:
1.16 tj 278: <li id="p017_rip6cksum">
1.19 bentley 279: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 280: <i>All architectures</i>
281: <br>
282: If a userland program sets the IPv6 checksum offset on a raw socket,
283: an incoming packet could crash the kernel. ospf6d is such a program.
284: <br>
285: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
286: A source code patch exists which remedies this problem.</a>
287: <p>
288:
1.20 tj 289: <li id="p018_mds">
290: <strong>018: SECURITY FIX: May 29, 2019</strong>
291: <i>amd64</i>
292: <br>
293: Intel CPUs have a cross privilege side-channel attack (MDS).
294: <br>
295: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
296: A source code patch exists which remedies this problem.</a>
297: <p>
298:
1.21 tj 299: <li id="p019_tcpsack">
300: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 301: <i>All architectures</i>
1.21 tj 302: <br>
303: By creating long chains of TCP SACK holes, an attacker could possibly
304: slow down the system temporarily.
305: <br>
306: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
307: A source code patch exists which remedies this problem.</a>
308: <p>
309:
1.23 tj 310: <li id="p020_smtpd">
311: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
312: <i>All architectures</i>
313: <br>
314: smtpd can crash on excessively large input, causing a denial of service.
315: <br>
316: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
317: A source code patch exists which remedies this problem.</a>
318: <p>
319:
1.24 tj 320: <li id="p021_swapgs">
321: <strong>021: SECURITY FIX: August 9, 2019</strong>
322: <i>amd64</i>
323: <br>
324: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
325: <br>
326: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
327: A source code patch exists which remedies this problem.</a>
328: <p>
329:
1.25 tj 330: <li id="p022_resume">
331: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
332: <i>amd64</i>
333: <br>
334: Resume forgot to restore MSR/PAT configuration.
335: <br>
336: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
337: A source code patch exists which remedies this problem.</a>
338: <p>
339:
340: <li id="p023_frag6ecn">
341: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
342: <i>All architectures</i>
343: <br>
344: When processing ECN bits on incoming IPv6 fragments, the kernel
345: could crash. Per default pf fragment reassemble prevents the crash.
346: <br>
347: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
348: A source code patch exists which remedies this problem.</a>
349: <p>
350:
1.26 tj 351: <li id="p024_expat">
352: <strong>024: SECURITY FIX: September 14, 2019</strong>
353: <i>All architectures</i>
354: <br>
355: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
356: <br>
357: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
358: A source code patch exists which remedies this problem.</a>
359: <p>
360:
1.28 tj 361: <li id="p025_unbound">
362: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
363: <i>All architectures</i>
364: <br>
365: Specially crafted queries may crash unwind and unbound.
366: <br>
367: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
368: A source code patch exists which remedies this problem.</a>
369: <p>
370:
371: <li id="p026_dhcpd">
372: <strong>026: SECURITY FIX: October 5, 2019</strong>
373: <i>All architectures</i>
374: <br>
375: dhcpd leaks 4 bytes of stack to the network.
376: <br>
377: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
378: A source code patch exists which remedies this problem.</a>
379: <p>
380:
1.1 deraadt 381: </ul>
382:
383: <hr>