From: sms
Subject: Fix CVE-2014-8139: CRC32 verification heap-based overflow
Bug-Debian: http://bugs.debian.org/773722

--- a/extract.c
+++ b/extract.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (c) 1990-2009 Info-ZIP.  All rights reserved.
+  Copyright (c) 1990-2014 Info-ZIP.  All rights reserved.
 
   See the accompanying file LICENSE, version 2009-Jan-02 or later
   (the contents of which are also included in unzip.h) for terms of use.
@@ -298,6 +298,8 @@
 #ifndef SFX
    static ZCONST char Far InconsistEFlength[] = "bad extra-field entry:\n \
      EF block length (%u bytes) exceeds remaining EF data (%u bytes)\n";
+   static ZCONST char Far TooSmallEFlength[] = "bad extra-field entry:\n \
+     EF block length (%u bytes) invalid (< %d)\n";
    static ZCONST char Far InvalidComprDataEAs[] =
      " invalid compressed data for EAs\n";
 #  if (defined(WIN32) && defined(NTSD_EAS))
@@ -2023,7 +2025,8 @@
         ebID = makeword(ef);
         ebLen = (unsigned)makeword(ef+EB_LEN);
 
-        if (ebLen > (ef_len - EB_HEADSIZE)) {
+        if (ebLen > (ef_len - EB_HEADSIZE))
+        {
            /* Discovered some extra field inconsistency! */
             if (uO.qflag)
                 Info(slide, 1, ((char *)slide, "%-22s ",
@@ -2032,6 +2035,16 @@
               ebLen, (ef_len - EB_HEADSIZE)));
             return PK_ERR;
         }
+        else if (ebLen < EB_HEADSIZE)
+        {
+            /* Extra block length smaller than header length. */
+            if (uO.qflag)
+                Info(slide, 1, ((char *)slide, "%-22s ",
+                  FnFilter1(G.filename)));
+            Info(slide, 1, ((char *)slide, LoadFarString(TooSmallEFlength),
+              ebLen, EB_HEADSIZE));
+            return PK_ERR;
+        }
 
         switch (ebID) {
             case EF_OS2:
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<div class='path'>path: <a href='/guix/log/?id=bcf7dc6c56c35e8e11e56215b3d32a08c42269d3'>root</a>/<a href='/guix/log/gnu?id=bcf7dc6c56c35e8e11e56215b3d32a08c42269d3'>gnu</a>/<a href='/guix/log/gnu/build?id=bcf7dc6c56c35e8e11e56215b3d32a08c42269d3'>build</a>/<a href='/guix/log/gnu/build/bootloader.scm?id=bcf7dc6c56c35e8e11e56215b3d32a08c42269d3'>bootloader.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/build/bootloader.scm?id=bcf7dc6c56c35e8e11e56215b3d32a08c42269d3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-06-24 10:21:06 +0200'>2022-06-24</span></td><td><a href='/guix/commit/gnu/build/bootloader.scm?id=62c86c8391ceb8953ca972498fd75ea9298b85ff'>image: Add support for 32bit UEFI.</a><span class='msg-avail'>...</span></td><td>Denis 'GNUtoo' Carikli</td></tr>
<tr><td><span title='2021-11-12 13:26:52 +0000'>2021-11-12</span></td><td><a href='/guix/commit/gnu/build/bootloader.scm?id=fb3df2011692b2a6fea9f4fefd71dd788453fbae'>build: bootloader: Add GPT support.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-11-03 07:59:59 +0100'>2020-11-03</span></td><td><a href='/guix/commit/gnu/build/bootloader.scm?id=a38d861e571c952f78ca588b50bdcc4adcb0c88c'>system: reconfigure: Use the disk-installer if provided.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-10-05 11:10:35 +0200'>2020-10-05</span></td><td><a href='/guix/commit/gnu/build/bootloader.scm?id=b97b423e3f61c80d5877dadc95b3f316cd61788f'>bootloader: Fix u-boot installation.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-05-05 16:08:33 +0200'>2020-05-05</span></td><td><a href='/guix/commit/gnu/build/bootloader.scm?id=f8fd1157174fd523d36dcfa756c965a54c30d5ae'>build: bootloader: Add install-efi procedure.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>