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From: "eggert at cs dot ucla.edu" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs-regex@sourceware.org
Subject: [Bug regex/28470] New: Buffer read overrun in regular expression
 searching
Date: Mon, 18 Oct 2021 22:07:19 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28470

            Bug ID: 28470
           Summary: Buffer read overrun in regular expression searching
           Product: glibc
           Version: 2.34
            Status: NEW
          Severity: normal
          Priority: P2
         Component: regex
          Assignee: eggert at cs dot ucla.edu
          Reporter: eggert at cs dot ucla.edu
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Created attachment 13724
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D13724&action=3Ded=
it
Patch glibc read buffer overrun in re_search_internal

The glibc regular expression matcher can overrun a read buffer when ignoring
case in a multibyte locale. Patch attached. I do not have a test case; I
suppose a test case could be derived from Benno's email, cited in the patch.

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