bugGNU gettext - Bugs: bug #38930, _nl_find_msg: Pointer use after...


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bug #38930: _nl_find_msg: Pointer use after free and callers that can't handle -1 return.

Submitted by:  Carlos O'Donell <codonell>
Submitted on:  Tue 07 May 2013 09:13:51 PM UTC  
Category:  End-user / runtime Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  Daiki Ueno <ueno>
Open/Closed:  Closed

Fri 06 Sep 2013 07:11:34 AM UTC, comment #3:

Merged now:

Sorry for the delay.

Daiki Ueno <ueno>
Project AdministratorIn charge of this item.
Tue 14 May 2013 04:49:21 AM UTC, comment #2:

I agree that glibc and gettext really need to stay in sync and we need to do that. It won't make the 2.18 freeze though as we have a lot of other things to work on. We should try to sync within the next 6-7 months.

I'm scared by the amount of divergence that was allowed to creep in on our side. I'm really sorry about that.

Carlos O'Donell <codonell>
Tue 14 May 2013 02:01:13 AM UTC, comment #1:

Thanks. Looks reasonable and I don't see any regression on non-glibc environement either.

As a new maintainer, I'm also wondering whether to sync the file between glibc and gettext. There seems already a significant difference between them. Maybe good to discuss it on the lists later.

Daiki Ueno <ueno>
Project AdministratorIn charge of this item.
Tue 07 May 2013 09:13:51 PM UTC, original submission:

The following two glibc bugs are also GNU gettext bugs and should be fixed in GNU gettext:

Firstly there is a use after free in _nl_find_msg, fixed by glibc BZ#14277:

That introduced another bug where if malloc fails under high memory load we might have NULL dereference.

The null dereference and callers not handling -1 return are fixed with BZ#15441:

I have copyright assignment from Red Hat.

I'm attaching a rebased patch against gettext master.

Compiles for me. Not tested except for with glibc.

Carlos O'Donell <codonell>


Attached Files
file #28042:  gettext-upstream.diff added by codonell (4KiB - text/x-patch)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by haible (Updated the item)
  • -email is unavailable- added by ueno (Posted a comment)
  • -email is unavailable- added by codonell (Submitted the item)

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    Follow 6 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-11-27 haible CategoryNone => End-user / runtime
    2013-09-06 ueno StatusConfirmed => Fixed
        Assigned toNone => ueno
        Open/ClosedOpen => Closed
    2013-05-14 ueno StatusNone => Confirmed
    2013-05-07 codonell Attached File- => Added gettext-upstream.diff, #28042

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