bug#32592: heap-use-after-free in regex module

bug-sed

From:	Assaf Gordon
Subject:	bug#32592: heap-use-after-free in regex module
Date:	Wed, 5 Sep 2018 18:04:03 -0600
User-agent:	Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

Hello,

On Wed, Sep 5, 2018 at 12:32 AM Assaf Gordon <address@hidden> wrote: >>>> On 04/09/18 07:02 PM, Saito Takaaki wrote:>>>

https://ideone.com/Sq5xJX>>>>>> I hope this helps even a bit.>>>> Thelinked snippet you provided exposed a heap-use-after-free bug

in gnulib's regex module (possibly in glibc as well).


Please find the attached patch as a suggested fix.

Comments and review very welcomed,
 - assaf

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bug#32592: s with i modifier seems to work incorrectly, Assaf Gordon, 2018/09/04
- bug#32592: s with i modifier seems to work incorrectly, Saito Takaaki, 2018/09/04
  - bug#32592: heap-use-after-free in regex module (was: s with i modifier seems to work incorrectly), Assaf Gordon, 2018/09/05
    - bug#32592: heap-use-after-free in regex module (was: s with i modifier seems to work incorrectly), Jim Meyering, 2018/09/05
    - bug#32592: heap-use-after-free in regex module, Assaf Gordon <=
    - bug#32592: heap-use-after-free in regex module, Assaf Gordon, 2018/09/05
    - bug#32592: heap-use-after-free in regex module, Jim Meyering, 2018/09/06
    - bug#32592: heap-use-after-free in regex module, Assaf Gordon, 2018/09/05
    - bug#32592: heap-use-after-free in regex module, Jim Meyering, 2018/09/06
    - bug#32592: heap-use-after-free in regex module, Paul Eggert, 2018/09/06
    - bug#32592: heap-use-after-free in regex module, Assaf Gordon, 2018/09/06
    - bug#32592: heap-use-after-free in regex module, Paul Eggert, 2018/09/06
    - bug#32592: heap-use-after-free in regex module, Jim Meyering, 2018/09/06