On Thu, Jun 13, 2019 at 03:33:48PM +0900, Michael Paquier wrote:
> On Wed, Jun 12, 2019 at 05:25:37PM -0400, Bruce Momjian wrote:
> > Since we did not backpatch this fix, I am hesitant to spell out exactly
> > how to exploit this DOS attack. Yes, people can read it in the email
> > archives, and commit messages, but I don't see the value in spelling it
> > out the release notes too.
>
> We could go for a more general version of that, for the reason that it
> involves all relations, like:
> "A caller of TRUNCATE or VACUUM could previously queue for an access
> exclusive lock on a relation it may not have permission to truncate or
> vacuum, leading to relations to be blocked from being accessed."
Uh, that still seems to suggest an attack and I am not sure that
information is very useful to users.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
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