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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>,
71: <a href="errata66.html">6.6</a>.
1.1 deraadt 72: <hr>
73:
74: <p>
75: Patches for the OpenBSD base system are distributed as unified diffs.
76: Each patch is cryptographically signed with the
1.3 tb 77: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 78: usage instructions.
79: All the following patches are also available in one
80: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.tar.gz">tar.gz file</a>
81: for convenience.
82:
83: <p>
84: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
85: utility can be used to apply binary updates on the following architectures:
86: amd64, i386, arm64.
87:
88: <p>
89: Patches for supported releases are also incorporated into the
1.29 tj 90: <a href="stable.html">-stable branch</a>.
1.1 deraadt 91:
92: <hr>
93:
94: <ul>
95:
1.4 tj 96: <li id="p001_xserver">
1.19 bentley 97: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 98: <i>All architectures</i>
99: <br>
100: The Xorg X server incorrectly validates certain options, allowing arbitrary
101: files to be overwritten.
102: As an immediate (temporary) workaround, the Xorg binary can be disabled
103: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
104: <br>
105: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
106: A source code patch exists which remedies this problem.</a>
107: <p>
1.1 deraadt 108:
1.5 tj 109: <li id="p002_syspatch">
1.19 bentley 110: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 111: <i>i386, amd64, arm64</i>
112: <br>
113: The syspatch utility incorrectly handles symbolic links.
114: <br>
115: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
116: A source code patch exists which remedies this problem.</a>
117: <p>
118:
1.6 tj 119: <li id="p003_portsmash">
1.19 bentley 120: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 121: <i>All architectures</i>
122: <br>
123: The portsmash vulnerability allows exfiltration of elliptic curve keys.
124: <br>
125: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
126: A source code patch exists which remedies this problem.</a>
127: <p>
128:
129: <li id="p004_lockf">
1.19 bentley 130: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 131: <i>All architectures</i>
132: <br>
133: A recent change to POSIX file locks could cause incorrect results
134: during lock acquisition.
135: <br>
136: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
137: A source code patch exists which remedies this problem.</a>
138: <p>
139:
1.8 tj 140: <li id="p005_perl">
1.19 bentley 141: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 142: <i>All architectures</i>
143: <br>
144: Various overflows exist in perl.
145: <br>
146: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
147: A source code patch exists which remedies this problem.</a>
148: <p>
149:
150: <li id="p006_uipc">
1.19 bentley 151: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 152: <i>All architectures</i>
153: <br>
154: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
155: attempt excessive memory allocations leading to a crash.
156: <br>
157: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
158: A source code patch exists which remedies this problem.</a>
159: <p>
160:
161: <li id="p007_smtpd">
1.19 bentley 162: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 163: <i>All architectures</i>
164: <br>
165: The mail.mda and mail.lmtp delivery agents were not reporting temporary
166: failures correctly, causing smtpd to bounce messages in some cases where
167: it should have retried them.
168: <br>
169: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
170: A source code patch exists which remedies this problem.</a>
171: <p>
172:
173: <li id="p008_qcow2">
1.19 bentley 174: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 175: <i>amd64 and i386</i>
176: <br>
177: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
178: <br>
179: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
180: A source code patch exists which remedies this problem.</a>
181: <p>
182:
1.9 tj 183: <li id="p009_recvwait">
1.19 bentley 184: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 185: <i>All architectures</i>
186: <br>
187: While recv(2) with the MSG_WAITALL flag was receiving control
188: messages from a socket, the kernel could panic.
189: <br>
190: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
191: A source code patch exists which remedies this problem.</a>
192: <p>
193:
1.10 tj 194: <li id="p010_pcbopts">
1.19 bentley 195: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 196: <i>All architectures</i>
197: <br>
198: The setsockopt(2) system call could overflow mbuf cluster kernel
199: memory by 4 bytes.
200: <br>
201: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
202: A source code patch exists which remedies this problem.</a>
203: <p>
204:
1.11 tj 205: <li id="p011_mincore">
1.19 bentley 206: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 207: <i>All architectures</i>
208: <br>
209: The mincore() system call can be used to observe memory access patterns
210: of other processes.
211: <br>
212: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
213: A source code patch exists which remedies this problem.</a>
214: <p>
215:
216: <li id="p012_nfs">
1.19 bentley 217: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 218: <i>All architectures</i>
219: <br>
220: Missing length checks in the NFS server and client can lead to crashes
221: and other errors.
222: <br>
223: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
224: A source code patch exists which remedies this problem.</a>
225: <p>
226:
227: <li id="p013_unveil">
1.19 bentley 228: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 229: <i>All architectures</i>
230: <br>
231: The unveil() system call can leak memory.
232: <br>
233: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
234: A source code patch exists which remedies this problem.</a>
235: <p>
236:
1.12 tj 237: <li id="p014_pf6frag">
1.19 bentley 238: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 239: <i>All architectures</i>
240: <br>
241: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
242: <br>
243: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
244: A source code patch exists which remedies this problem.</a>
245: <p>
246:
1.13 tj 247: <li id="p015_pficmp">
1.19 bentley 248: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 249: <i>All architectures</i>
250: <br>
251: A state in pf could pass ICMP packets to a destination IP address
252: that did not match the state.
253: <br>
254: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
255: A source code patch exists which remedies this problem.</a>
256: <p>
257:
1.14 tj 258: <li id="p016_vmmints">
1.19 bentley 259: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 260: <i>amd64 and i386</i>
261: <br>
262: GDT and IDT limits were improperly restored during VMM context switches.
263: <br>
264: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
265: A source code patch exists which remedies this problem.</a>
266: <p>
267:
1.16 tj 268: <li id="p017_rip6cksum">
1.19 bentley 269: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 270: <i>All architectures</i>
271: <br>
272: If a userland program sets the IPv6 checksum offset on a raw socket,
273: an incoming packet could crash the kernel. ospf6d is such a program.
274: <br>
275: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
276: A source code patch exists which remedies this problem.</a>
277: <p>
278:
1.20 tj 279: <li id="p018_mds">
280: <strong>018: SECURITY FIX: May 29, 2019</strong>
281: <i>amd64</i>
282: <br>
283: Intel CPUs have a cross privilege side-channel attack (MDS).
284: <br>
285: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
286: A source code patch exists which remedies this problem.</a>
287: <p>
288:
1.21 tj 289: <li id="p019_tcpsack">
290: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 291: <i>All architectures</i>
1.21 tj 292: <br>
293: By creating long chains of TCP SACK holes, an attacker could possibly
294: slow down the system temporarily.
295: <br>
296: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
297: A source code patch exists which remedies this problem.</a>
298: <p>
299:
1.23 tj 300: <li id="p020_smtpd">
301: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
302: <i>All architectures</i>
303: <br>
304: smtpd can crash on excessively large input, causing a denial of service.
305: <br>
306: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
307: A source code patch exists which remedies this problem.</a>
308: <p>
309:
1.24 tj 310: <li id="p021_swapgs">
311: <strong>021: SECURITY FIX: August 9, 2019</strong>
312: <i>amd64</i>
313: <br>
314: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
315: <br>
316: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
317: A source code patch exists which remedies this problem.</a>
318: <p>
319:
1.25 tj 320: <li id="p022_resume">
321: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
322: <i>amd64</i>
323: <br>
324: Resume forgot to restore MSR/PAT configuration.
325: <br>
326: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
327: A source code patch exists which remedies this problem.</a>
328: <p>
329:
330: <li id="p023_frag6ecn">
331: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
332: <i>All architectures</i>
333: <br>
334: When processing ECN bits on incoming IPv6 fragments, the kernel
335: could crash. Per default pf fragment reassemble prevents the crash.
336: <br>
337: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
338: A source code patch exists which remedies this problem.</a>
339: <p>
340:
1.26 tj 341: <li id="p024_expat">
342: <strong>024: SECURITY FIX: September 14, 2019</strong>
343: <i>All architectures</i>
344: <br>
345: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
346: <br>
347: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
348: A source code patch exists which remedies this problem.</a>
349: <p>
350:
1.28 tj 351: <li id="p025_unbound">
352: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
353: <i>All architectures</i>
354: <br>
355: Specially crafted queries may crash unwind and unbound.
356: <br>
357: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
358: A source code patch exists which remedies this problem.</a>
359: <p>
360:
361: <li id="p026_dhcpd">
362: <strong>026: SECURITY FIX: October 5, 2019</strong>
363: <i>All architectures</i>
364: <br>
365: dhcpd leaks 4 bytes of stack to the network.
366: <br>
367: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
368: A source code patch exists which remedies this problem.</a>
369: <p>
370:
1.1 deraadt 371: </ul>
372:
373: <hr>
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