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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>,
! 72: <a href="errata67.html">6.7</a>.
1.1 deraadt 73: <hr>
74:
75: <p>
76: Patches for the OpenBSD base system are distributed as unified diffs.
77: Each patch is cryptographically signed with the
1.3 tb 78: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 79: usage instructions.
80: All the following patches are also available in one
81: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.tar.gz">tar.gz file</a>
82: for convenience.
83:
84: <p>
85: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
86: utility can be used to apply binary updates on the following architectures:
87: amd64, i386, arm64.
88:
89: <p>
90: Patches for supported releases are also incorporated into the
1.29 tj 91: <a href="stable.html">-stable branch</a>.
1.1 deraadt 92:
93: <hr>
94:
95: <ul>
96:
1.4 tj 97: <li id="p001_xserver">
1.19 bentley 98: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 99: <i>All architectures</i>
100: <br>
101: The Xorg X server incorrectly validates certain options, allowing arbitrary
102: files to be overwritten.
103: As an immediate (temporary) workaround, the Xorg binary can be disabled
104: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
105: <br>
106: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
107: A source code patch exists which remedies this problem.</a>
108: <p>
1.1 deraadt 109:
1.5 tj 110: <li id="p002_syspatch">
1.19 bentley 111: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 112: <i>i386, amd64, arm64</i>
113: <br>
114: The syspatch utility incorrectly handles symbolic links.
115: <br>
116: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
117: A source code patch exists which remedies this problem.</a>
118: <p>
119:
1.6 tj 120: <li id="p003_portsmash">
1.19 bentley 121: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 122: <i>All architectures</i>
123: <br>
124: The portsmash vulnerability allows exfiltration of elliptic curve keys.
125: <br>
126: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
127: A source code patch exists which remedies this problem.</a>
128: <p>
129:
130: <li id="p004_lockf">
1.19 bentley 131: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 132: <i>All architectures</i>
133: <br>
134: A recent change to POSIX file locks could cause incorrect results
135: during lock acquisition.
136: <br>
137: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
138: A source code patch exists which remedies this problem.</a>
139: <p>
140:
1.8 tj 141: <li id="p005_perl">
1.19 bentley 142: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 143: <i>All architectures</i>
144: <br>
145: Various overflows exist in perl.
146: <br>
147: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
148: A source code patch exists which remedies this problem.</a>
149: <p>
150:
151: <li id="p006_uipc">
1.19 bentley 152: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 153: <i>All architectures</i>
154: <br>
155: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
156: attempt excessive memory allocations leading to a crash.
157: <br>
158: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
159: A source code patch exists which remedies this problem.</a>
160: <p>
161:
162: <li id="p007_smtpd">
1.19 bentley 163: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 164: <i>All architectures</i>
165: <br>
166: The mail.mda and mail.lmtp delivery agents were not reporting temporary
167: failures correctly, causing smtpd to bounce messages in some cases where
168: it should have retried them.
169: <br>
170: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
171: A source code patch exists which remedies this problem.</a>
172: <p>
173:
174: <li id="p008_qcow2">
1.19 bentley 175: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 176: <i>amd64 and i386</i>
177: <br>
178: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
179: <br>
180: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
181: A source code patch exists which remedies this problem.</a>
182: <p>
183:
1.9 tj 184: <li id="p009_recvwait">
1.19 bentley 185: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 186: <i>All architectures</i>
187: <br>
188: While recv(2) with the MSG_WAITALL flag was receiving control
189: messages from a socket, the kernel could panic.
190: <br>
191: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
192: A source code patch exists which remedies this problem.</a>
193: <p>
194:
1.10 tj 195: <li id="p010_pcbopts">
1.19 bentley 196: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 197: <i>All architectures</i>
198: <br>
199: The setsockopt(2) system call could overflow mbuf cluster kernel
200: memory by 4 bytes.
201: <br>
202: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
203: A source code patch exists which remedies this problem.</a>
204: <p>
205:
1.11 tj 206: <li id="p011_mincore">
1.19 bentley 207: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 208: <i>All architectures</i>
209: <br>
210: The mincore() system call can be used to observe memory access patterns
211: of other processes.
212: <br>
213: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
214: A source code patch exists which remedies this problem.</a>
215: <p>
216:
217: <li id="p012_nfs">
1.19 bentley 218: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 219: <i>All architectures</i>
220: <br>
221: Missing length checks in the NFS server and client can lead to crashes
222: and other errors.
223: <br>
224: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
225: A source code patch exists which remedies this problem.</a>
226: <p>
227:
228: <li id="p013_unveil">
1.19 bentley 229: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 230: <i>All architectures</i>
231: <br>
232: The unveil() system call can leak memory.
233: <br>
234: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
235: A source code patch exists which remedies this problem.</a>
236: <p>
237:
1.12 tj 238: <li id="p014_pf6frag">
1.19 bentley 239: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 240: <i>All architectures</i>
241: <br>
242: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
243: <br>
244: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
245: A source code patch exists which remedies this problem.</a>
246: <p>
247:
1.13 tj 248: <li id="p015_pficmp">
1.19 bentley 249: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 250: <i>All architectures</i>
251: <br>
252: A state in pf could pass ICMP packets to a destination IP address
253: that did not match the state.
254: <br>
255: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
256: A source code patch exists which remedies this problem.</a>
257: <p>
258:
1.14 tj 259: <li id="p016_vmmints">
1.19 bentley 260: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 261: <i>amd64 and i386</i>
262: <br>
263: GDT and IDT limits were improperly restored during VMM context switches.
264: <br>
265: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
266: A source code patch exists which remedies this problem.</a>
267: <p>
268:
1.16 tj 269: <li id="p017_rip6cksum">
1.19 bentley 270: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 271: <i>All architectures</i>
272: <br>
273: If a userland program sets the IPv6 checksum offset on a raw socket,
274: an incoming packet could crash the kernel. ospf6d is such a program.
275: <br>
276: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
277: A source code patch exists which remedies this problem.</a>
278: <p>
279:
1.20 tj 280: <li id="p018_mds">
281: <strong>018: SECURITY FIX: May 29, 2019</strong>
282: <i>amd64</i>
283: <br>
284: Intel CPUs have a cross privilege side-channel attack (MDS).
285: <br>
286: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
287: A source code patch exists which remedies this problem.</a>
288: <p>
289:
1.21 tj 290: <li id="p019_tcpsack">
291: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 292: <i>All architectures</i>
1.21 tj 293: <br>
294: By creating long chains of TCP SACK holes, an attacker could possibly
295: slow down the system temporarily.
296: <br>
297: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
298: A source code patch exists which remedies this problem.</a>
299: <p>
300:
1.23 tj 301: <li id="p020_smtpd">
302: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
303: <i>All architectures</i>
304: <br>
305: smtpd can crash on excessively large input, causing a denial of service.
306: <br>
307: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
308: A source code patch exists which remedies this problem.</a>
309: <p>
310:
1.24 tj 311: <li id="p021_swapgs">
312: <strong>021: SECURITY FIX: August 9, 2019</strong>
313: <i>amd64</i>
314: <br>
315: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
316: <br>
317: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
318: A source code patch exists which remedies this problem.</a>
319: <p>
320:
1.25 tj 321: <li id="p022_resume">
322: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
323: <i>amd64</i>
324: <br>
325: Resume forgot to restore MSR/PAT configuration.
326: <br>
327: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
328: A source code patch exists which remedies this problem.</a>
329: <p>
330:
331: <li id="p023_frag6ecn">
332: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
333: <i>All architectures</i>
334: <br>
335: When processing ECN bits on incoming IPv6 fragments, the kernel
336: could crash. Per default pf fragment reassemble prevents the crash.
337: <br>
338: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
339: A source code patch exists which remedies this problem.</a>
340: <p>
341:
1.26 tj 342: <li id="p024_expat">
343: <strong>024: SECURITY FIX: September 14, 2019</strong>
344: <i>All architectures</i>
345: <br>
346: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
347: <br>
348: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
349: A source code patch exists which remedies this problem.</a>
350: <p>
351:
1.28 tj 352: <li id="p025_unbound">
353: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
354: <i>All architectures</i>
355: <br>
356: Specially crafted queries may crash unwind and unbound.
357: <br>
358: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
359: A source code patch exists which remedies this problem.</a>
360: <p>
361:
362: <li id="p026_dhcpd">
363: <strong>026: SECURITY FIX: October 5, 2019</strong>
364: <i>All architectures</i>
365: <br>
366: dhcpd leaks 4 bytes of stack to the network.
367: <br>
368: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
369: A source code patch exists which remedies this problem.</a>
370: <p>
371:
1.1 deraadt 372: </ul>
373:
374: <hr>
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