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18: <h2>
19: <a href="index.html">
20: <font color="#0000ff"><i>Open</i></font><font color="#000084">BSD</font></a>
21: <font color="#e00000">6.2 Errata</font>
22: </h2>
23: <hr>
24:
25: For errata on a certain release, click below:<br>
26: <a href="errata21.html">2.1</a>,
27: <a href="errata22.html">2.2</a>,
28: <a href="errata23.html">2.3</a>,
29: <a href="errata24.html">2.4</a>,
30: <a href="errata25.html">2.5</a>,
31: <a href="errata26.html">2.6</a>,
32: <a href="errata27.html">2.7</a>,
33: <a href="errata28.html">2.8</a>,
34: <a href="errata29.html">2.9</a>,
35: <a href="errata30.html">3.0</a>,
36: <a href="errata31.html">3.1</a>,
37: <a href="errata32.html">3.2</a>,
38: <a href="errata33.html">3.3</a>,
39: <a href="errata34.html">3.4</a>,
40: <a href="errata35.html">3.5</a>,
41: <a href="errata36.html">3.6</a>,
42: <br>
43: <a href="errata37.html">3.7</a>,
44: <a href="errata38.html">3.8</a>,
45: <a href="errata39.html">3.9</a>,
46: <a href="errata40.html">4.0</a>,
47: <a href="errata41.html">4.1</a>,
48: <a href="errata42.html">4.2</a>,
49: <a href="errata43.html">4.3</a>,
50: <a href="errata44.html">4.4</a>,
51: <a href="errata45.html">4.5</a>,
52: <a href="errata46.html">4.6</a>,
53: <a href="errata47.html">4.7</a>,
54: <a href="errata48.html">4.8</a>,
55: <a href="errata49.html">4.9</a>,
56: <a href="errata50.html">5.0</a>,
57: <a href="errata51.html">5.1</a>,
58: <a href="errata52.html">5.2</a>,
59: <br>
60: <a href="errata53.html">5.3</a>,
61: <a href="errata54.html">5.4</a>,
62: <a href="errata55.html">5.5</a>,
63: <a href="errata56.html">5.6</a>,
64: <a href="errata57.html">5.7</a>,
65: <a href="errata58.html">5.8</a>,
66: <a href="errata59.html">5.9</a>,
67: <a href="errata60.html">6.0</a>,
1.11 deraadt 68: <a href="errata61.html">6.1</a>,
69: <a href="errata63.html">6.3</a>.
1.1 deraadt 70: <hr>
71:
72: <p>
73: Patches for the OpenBSD base system are distributed as unified diffs.
74: Each patch is cryptographically signed with the
75: <a href="https://man.openbsd.org/OpenBSD-6.2/signify.1">signify(1)</a> tool and contains
76: usage instructions.
77: All the following patches are also available in one
78: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2.tar.gz">tar.gz file</a>
79: for convenience.
80:
81: <p>
82: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
83: utility can be used to apply binary updates on the following architectures:
1.3 tj 84: amd64, i386, arm64.
1.1 deraadt 85:
86: <p>
87: Patches for supported releases are also incorporated into the
88: <a href="stable.html">-stable branch</a>, which is maintained for one year
89: after release.
90:
91: <hr>
92:
93: <ul>
94:
1.2 bluhm 95: <li id="p001_tcb_invalid">
96: <font color="#009000">
97: <strong>001: RELIABILITY FIX: October 13, 2017</strong></font>
98: <i>amd64</i>
99: <br>
100: A local user could trigger a kernel panic by using an invalid TCB value.
101: <br>
102: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/001_tcb_invalid.patch.sig">
1.3 tj 103: A source code patch exists which remedies this problem.</a>
104: <p>
105:
106: <li id="p002_fktrace">
107: <font color="#009000">
108: <strong>002: SECURITY FIX: December 1, 2017</strong></font>
109: <i>All architectures</i>
110: <br>
111: The fktrace(2) system call had insufficient security checks.
112: <br>
113: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/002_fktrace.patch.sig">
1.2 bluhm 114: A source code patch exists which remedies this problem.</a>
115: <p>
1.1 deraadt 116:
1.4 tj 117: <li id="p003_mpls">
118: <font color="#009000">
119: <strong>003: RELIABILITY FIX: December 10, 2017</strong></font>
120: <i>All architectures</i>
121: <br>
122: A number of bugs were discovered in the MPLS stack that can be used to
123: remotely trigger kernel crashes.
124: <br>
125: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/003_mpls.patch.sig">
126: A source code patch exists which remedies this problem.</a>
127: <p>
128:
1.5 tj 129: <li id="p004_libssl">
130: <font color="#009000">
131: <strong>004: RELIABILITY FIX: January 14, 2018</strong></font>
132: <i>All architectures</i>
133: <br>
134: An incorrect TLS extensions block is generated when no extensions are present,
135: which can result in handshake failures.
136: <br>
137: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/004_libssl.patch.sig">
138: A source code patch exists which remedies this problem.</a>
139: <p>
140:
1.6 tj 141: <li id="p005_ahopts">
142: <font color="#009000">
143: <strong>005: RELIABILITY FIX: February 2, 2018</strong></font>
144: <i>All architectures</i>
145: <br>
146: Specially crafted IPsec AH packets with IP options or IPv6 extension
147: headers could crash or hang the kernel.
148: <br>
149: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/005_ahopts.patch.sig">
150: A source code patch exists which remedies this problem.</a>
151: <p>
152:
153: <li id="p006_prevhdr">
154: <font color="#009000">
155: <strong>006: RELIABILITY FIX: February 2, 2018</strong></font>
156: <i>All architectures</i>
157: <br>
158: Processing IPv6 fragments could incorrectly access memory of an mbuf
159: chain that is not within an mbuf. This may crash the kernel.
160: <br>
161: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/006_prevhdr.patch.sig">
162: A source code patch exists which remedies this problem.</a>
163: <p>
164:
165: <li id="p007_etherip">
166: <font color="#009000">
167: <strong>007: SECURITY FIX: February 2, 2018</strong></font>
168: <i>All architectures</i>
169: <br>
170: If the EtherIP tunnel protocol was disabled, IPv6 packets were not
171: discarded properly. This causes a double free in the kernel.
172: <br>
173: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/007_etherip.patch.sig">
174: A source code patch exists which remedies this problem.</a>
175: <p>
176:
1.7 tj 177: <li id="p008_unbound">
178: <font color="#009000">
1.8 tj 179: <strong>008: SECURITY FIX: February 8, 2018</strong></font>
1.7 tj 180: <i>All architectures</i>
181: <br>
182: A flaw was found in the way unbound validated wildcard-synthesized
183: NSEC records. An improperly validated wildcard NSEC record could be
184: used to prove the non-existence (NXDOMAIN answer) of an existing
185: wildcard record, or trick unbound into accepting a NODATA proof.
186: <br>
187: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/008_unbound.patch.sig">
188: A source code patch exists which remedies this problem.</a>
189: <p>
190:
1.9 tj 191: <li id="p009_meltdown">
192: <font color="#009000">
193: <strong>009: SECURITY FIX: March 1, 2018</strong></font>
194: <i>amd64</i>
195: <br>
196: Intel CPUs contain a speculative execution flaw called Meltdown which
197: allows userspace programs to access kernel memory.
198: <br>
199: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/009_meltdown.patch.sig">
200: A complex workaround solves this problem.</a>
201: <p>
202:
1.10 tj 203: <li id="p010_ahauth">
204: <font color="#009000">
205: <strong>010: RELIABILITY FIX: March 20, 2018</strong></font>
206: <i>All architectures</i>
207: <br>
208: The IPsec AH header could be longer than the network packet, resulting in
209: a kernel crash.
210: <br>
211: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/010_ahauth.patch.sig">
212: A source code patch exists which remedies this problem.</a>
213: <p>
214:
1.12 afresh1 215: <li id="p011_perl">
216: <font color="#009000">
217: <strong>011: SECURITY FIX: April 14, 2018</strong></font>
218: <i>All architectures</i>
219: <br>
220: Heap overflows exist in perl which can lead to segmentation faults,
221: crashes, and reading memory past the buffer.
222: <br>
223: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/011_perl.patch.sig">
224: A source code patch exists which remedies this problem.</a>
225: <p>
226:
1.13 ! tj 227: <li id="p012_httpd">
! 228: <font color="#009000">
! 229: <strong>012: RELIABILITY FIX: April 21, 2018</strong></font>
! 230: <i>All architectures</i>
! 231: <br>
! 232: httpd can leak file descriptors when servicing range requests.
! 233: <br>
! 234: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/012_httpd.patch.sig">
! 235: A source code patch exists which remedies this problem.</a>
! 236: <p>
! 237:
1.1 deraadt 238: </ul>
239:
240: <hr>
241:
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