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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>,
! 74: <a href="errata69.html">6.9</a>.
1.1 deraadt 75: <hr>
76:
77: <p>
78: Patches for the OpenBSD base system are distributed as unified diffs.
79: Each patch is cryptographically signed with the
1.3 tb 80: <a href="https://man.openbsd.org/OpenBSD-6.4/signify.1">signify(1)</a> tool and contains
1.1 deraadt 81: usage instructions.
82: All the following patches are also available in one
83: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4.tar.gz">tar.gz file</a>
84: for convenience.
85:
86: <p>
87: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
88: utility can be used to apply binary updates on the following architectures:
89: amd64, i386, arm64.
90:
91: <p>
92: Patches for supported releases are also incorporated into the
1.29 tj 93: <a href="stable.html">-stable branch</a>.
1.1 deraadt 94:
95: <hr>
96:
97: <ul>
98:
1.4 tj 99: <li id="p001_xserver">
1.19 bentley 100: <strong>001: SECURITY FIX: October 25, 2018</strong>
1.4 tj 101: <i>All architectures</i>
102: <br>
103: The Xorg X server incorrectly validates certain options, allowing arbitrary
104: files to be overwritten.
105: As an immediate (temporary) workaround, the Xorg binary can be disabled
106: by running: <code>chmod u-s /usr/X11R6/bin/Xorg</code>
107: <br>
108: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/001_xserver.patch.sig">
109: A source code patch exists which remedies this problem.</a>
110: <p>
1.1 deraadt 111:
1.5 tj 112: <li id="p002_syspatch">
1.19 bentley 113: <strong>002: RELIABILITY FIX: November 2, 2018</strong>
1.5 tj 114: <i>i386, amd64, arm64</i>
115: <br>
116: The syspatch utility incorrectly handles symbolic links.
117: <br>
118: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig">
119: A source code patch exists which remedies this problem.</a>
120: <p>
121:
1.6 tj 122: <li id="p003_portsmash">
1.19 bentley 123: <strong>003: SECURITY FIX: November 17, 2018</strong>
1.6 tj 124: <i>All architectures</i>
125: <br>
126: The portsmash vulnerability allows exfiltration of elliptic curve keys.
127: <br>
128: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/003_portsmash.patch.sig">
129: A source code patch exists which remedies this problem.</a>
130: <p>
131:
132: <li id="p004_lockf">
1.19 bentley 133: <strong>004: RELIABILITY FIX: November 17, 2018</strong>
1.6 tj 134: <i>All architectures</i>
135: <br>
136: A recent change to POSIX file locks could cause incorrect results
137: during lock acquisition.
138: <br>
139: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/004_lockf.patch.sig">
140: A source code patch exists which remedies this problem.</a>
141: <p>
142:
1.8 tj 143: <li id="p005_perl">
1.19 bentley 144: <strong>005: SECURITY FIX: November 29, 2018</strong>
1.8 tj 145: <i>All architectures</i>
146: <br>
147: Various overflows exist in perl.
148: <br>
149: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/005_perl.patch.sig">
150: A source code patch exists which remedies this problem.</a>
151: <p>
152:
153: <li id="p006_uipc">
1.19 bentley 154: <strong>006: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 155: <i>All architectures</i>
156: <br>
157: UNIX domain sockets leak kernel memory with MSG_PEEK on SCM_RIGHTS, or can
158: attempt excessive memory allocations leading to a crash.
159: <br>
160: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/006_uipc.patch.sig">
161: A source code patch exists which remedies this problem.</a>
162: <p>
163:
164: <li id="p007_smtpd">
1.19 bentley 165: <strong>007: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 166: <i>All architectures</i>
167: <br>
168: The mail.mda and mail.lmtp delivery agents were not reporting temporary
169: failures correctly, causing smtpd to bounce messages in some cases where
170: it should have retried them.
171: <br>
172: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/007_smtpd.patch.sig">
173: A source code patch exists which remedies this problem.</a>
174: <p>
175:
176: <li id="p008_qcow2">
1.19 bentley 177: <strong>008: RELIABILITY FIX: November 29, 2018</strong>
1.8 tj 178: <i>amd64 and i386</i>
179: <br>
180: Writing more than 4GB to a qcow2 volume corrupts the virtual disk.
181: <br>
182: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/008_qcow2.patch.sig">
183: A source code patch exists which remedies this problem.</a>
184: <p>
185:
1.9 tj 186: <li id="p009_recvwait">
1.19 bentley 187: <strong>009: RELIABILITY FIX: December 20, 2018</strong>
1.9 tj 188: <i>All architectures</i>
189: <br>
190: While recv(2) with the MSG_WAITALL flag was receiving control
191: messages from a socket, the kernel could panic.
192: <br>
193: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/009_recvwait.patch.sig">
194: A source code patch exists which remedies this problem.</a>
195: <p>
196:
1.10 tj 197: <li id="p010_pcbopts">
1.19 bentley 198: <strong>010: SECURITY FIX: December 22, 2018</strong>
1.10 tj 199: <i>All architectures</i>
200: <br>
201: The setsockopt(2) system call could overflow mbuf cluster kernel
202: memory by 4 bytes.
203: <br>
204: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/010_pcbopts.patch.sig">
205: A source code patch exists which remedies this problem.</a>
206: <p>
207:
1.11 tj 208: <li id="p011_mincore">
1.19 bentley 209: <strong>011: SECURITY FIX: January 27, 2019</strong>
1.11 tj 210: <i>All architectures</i>
211: <br>
212: The mincore() system call can be used to observe memory access patterns
213: of other processes.
214: <br>
215: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/011_mincore.patch.sig">
216: A source code patch exists which remedies this problem.</a>
217: <p>
218:
219: <li id="p012_nfs">
1.19 bentley 220: <strong>012: RELIABILITY FIX: January 27, 2019</strong>
1.11 tj 221: <i>All architectures</i>
222: <br>
223: Missing length checks in the NFS server and client can lead to crashes
224: and other errors.
225: <br>
226: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/012_nfs.patch.sig">
227: A source code patch exists which remedies this problem.</a>
228: <p>
229:
230: <li id="p013_unveil">
1.19 bentley 231: <strong>013: SECURITY FIX: January 27, 2019</strong>
1.11 tj 232: <i>All architectures</i>
233: <br>
234: The unveil() system call can leak memory.
235: <br>
236: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/013_unveil.patch.sig">
237: A source code patch exists which remedies this problem.</a>
238: <p>
239:
1.12 tj 240: <li id="p014_pf6frag">
1.19 bentley 241: <strong>014: SECURITY FIX: March 1, 2019</strong>
1.12 tj 242: <i>All architectures</i>
243: <br>
244: Fragmented IPv6 packets may be erroneously passed by pf or lead to a crash.
245: <br>
246: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/014_pf6frag.patch.sig">
247: A source code patch exists which remedies this problem.</a>
248: <p>
249:
1.13 tj 250: <li id="p015_pficmp">
1.19 bentley 251: <strong>015: SECURITY FIX: March 22, 2019</strong>
1.13 tj 252: <i>All architectures</i>
253: <br>
254: A state in pf could pass ICMP packets to a destination IP address
255: that did not match the state.
256: <br>
257: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/015_pficmp.patch.sig">
258: A source code patch exists which remedies this problem.</a>
259: <p>
260:
1.14 tj 261: <li id="p016_vmmints">
1.19 bentley 262: <strong>016: SECURITY FIX: March 27, 2019</strong>
1.14 tj 263: <i>amd64 and i386</i>
264: <br>
265: GDT and IDT limits were improperly restored during VMM context switches.
266: <br>
267: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/016_vmmints.patch.sig">
268: A source code patch exists which remedies this problem.</a>
269: <p>
270:
1.16 tj 271: <li id="p017_rip6cksum">
1.19 bentley 272: <strong>017: RELIABILITY FIX: May 3, 2019</strong>
1.16 tj 273: <i>All architectures</i>
274: <br>
275: If a userland program sets the IPv6 checksum offset on a raw socket,
276: an incoming packet could crash the kernel. ospf6d is such a program.
277: <br>
278: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/017_rip6cksum.patch.sig">
279: A source code patch exists which remedies this problem.</a>
280: <p>
281:
1.20 tj 282: <li id="p018_mds">
283: <strong>018: SECURITY FIX: May 29, 2019</strong>
284: <i>amd64</i>
285: <br>
286: Intel CPUs have a cross privilege side-channel attack (MDS).
287: <br>
288: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/018_mds.patch.sig">
289: A source code patch exists which remedies this problem.</a>
290: <p>
291:
1.21 tj 292: <li id="p019_tcpsack">
293: <strong>019: RELIABILITY FIX: July 25, 2019</strong>
1.22 tj 294: <i>All architectures</i>
1.21 tj 295: <br>
296: By creating long chains of TCP SACK holes, an attacker could possibly
297: slow down the system temporarily.
298: <br>
299: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/019_tcpsack.patch.sig">
300: A source code patch exists which remedies this problem.</a>
301: <p>
302:
1.23 tj 303: <li id="p020_smtpd">
304: <strong>020: RELIABILITY FIX: August 2, 2019</strong>
305: <i>All architectures</i>
306: <br>
307: smtpd can crash on excessively large input, causing a denial of service.
308: <br>
309: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/020_smtpd.patch.sig">
310: A source code patch exists which remedies this problem.</a>
311: <p>
312:
1.24 tj 313: <li id="p021_swapgs">
314: <strong>021: SECURITY FIX: August 9, 2019</strong>
315: <i>amd64</i>
316: <br>
317: Intel CPUs have another cross privilege side-channel attack. (SWAPGS)
318: <br>
319: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/021_swapgs.patch.sig">
320: A source code patch exists which remedies this problem.</a>
321: <p>
322:
1.25 tj 323: <li id="p022_resume">
324: <strong>022: RELIABILITY FIX: September 2, 2019</strong>
325: <i>amd64</i>
326: <br>
327: Resume forgot to restore MSR/PAT configuration.
328: <br>
329: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/022_resume.patch.sig">
330: A source code patch exists which remedies this problem.</a>
331: <p>
332:
333: <li id="p023_frag6ecn">
334: <strong>023: RELIABILITY FIX: September 2, 2019</strong>
335: <i>All architectures</i>
336: <br>
337: When processing ECN bits on incoming IPv6 fragments, the kernel
338: could crash. Per default pf fragment reassemble prevents the crash.
339: <br>
340: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/023_frag6ecn.patch.sig">
341: A source code patch exists which remedies this problem.</a>
342: <p>
343:
1.26 tj 344: <li id="p024_expat">
345: <strong>024: SECURITY FIX: September 14, 2019</strong>
346: <i>All architectures</i>
347: <br>
348: Libexpat 2.2.6 was affected by the heap overflow CVE-2019-15903.
349: <br>
350: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/024_expat.patch.sig">
351: A source code patch exists which remedies this problem.</a>
352: <p>
353:
1.28 tj 354: <li id="p025_unbound">
355: <strong>025: RELIABILITY FIX: October 5, 2019</strong>
356: <i>All architectures</i>
357: <br>
358: Specially crafted queries may crash unwind and unbound.
359: <br>
360: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/025_unbound.patch.sig">
361: A source code patch exists which remedies this problem.</a>
362: <p>
363:
364: <li id="p026_dhcpd">
365: <strong>026: SECURITY FIX: October 5, 2019</strong>
366: <i>All architectures</i>
367: <br>
368: dhcpd leaks 4 bytes of stack to the network.
369: <br>
370: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/026_dhcpd.patch.sig">
371: A source code patch exists which remedies this problem.</a>
372: <p>
373:
1.1 deraadt 374: </ul>
375:
376: <hr>
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