| From: | Mats Kindahl <mats(at)timescale(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: glibc qsort() vulnerability |
| Date: | 2024-02-07 09:01:58 |
| Message-ID: | CA+14425sXfyiroL07eDfc-YtbmQebZTjePE2XiCqbjCbN7RUeg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Feb 6, 2024 at 4:11 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Mats Kindahl <mats(at)timescale(dot)com> writes:
> > There is a bug in glibc's qsort() algorithm that runs the risk of
> creating
> > an out-of-bounds error if the comparison function is not transitive, for
> > example, if subtraction is used so that it can create an overflow.
>
> We don't use glibc's qsort. Have you checked whether there's a
> problem with the code we do use?
>
Interesting. No, haven't checked. Will do that.
Best wishes,
Mats Kindahl
>
> regards, tom lane
>
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