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From: "jim at meyering dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs-regex@sourceware.org
Subject: [Bug regex/17150] New: regex: don't deref NULL upon heap allocation failure
Date: Sun, 13 Jul 2014 00:06:00 -0000
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X-Bugzilla-Component: regex
X-Bugzilla-Version: 2.21
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https://sourceware.org/bugzilla/show_bug.cgi?id=17150

            Bug ID: 17150
           Summary: regex: don't deref NULL upon heap allocation failure
           Product: glibc
           Version: 2.21
            Status: NEW
          Severity: normal
          Priority: P2
         Component: regex
          Assignee: unassigned at sourceware dot org
          Reporter: jim at meyering dot net
                CC: drepper.fsp at gmail dot com

Here's the ChangeLog entry for the attached patch:

2014-07-12  Jim Meyering  <meyering@fb.com>

        regex: don't deref NULL upon heap allocation failure
        * posix/regcomp.c (parse_dup_op): Handle duplicate_tree
        failure in one more place.
        To trigger the segfault, configure grep -with-included-regex,
        build it, and run these commands:
        ( ulimit -v 300000; echo a|src/grep -E a+++++++++++++++++++++ )

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