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From: Andrey Borodin <[email protected]>
To: Tom Lane <[email protected]>
Cc: PostgreSQL mailing lists <[email protected]>
Subject: Re: Potential buffer overrun in spell.c's CheckAffix()
Date: Thu, 30 Apr 2026 10:56:17 +0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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	<[email protected]>



> On 23 Apr 2026, at 12:58, Andrey Borodin <[email protected]> wrote:
> 
> Yes, 40Kb in NIImportOOAffixes() is a lot. But is it important in grand scheme of
> things? Minimum max_stack_depth is 100Kb, ought to be enough…

IsAffixFlagInUse(), addCompoundAffixFlagValue() and getCompoundAffixFlagValue()
also allocate 8Kb on stack...
Would it make sense to add check_stack_depth() into addCompoundAffixFlagValue()?
Other prominent allocators (NIImportOOAffixes(),NIImportAffixes()) call it anyway.
At least we will know if disaster is around the corner.


Best regards, Andrey Borodin.

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