From: Michael Paquier <michael@paquier.xyz>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Reject too many arguments in CREATE TRIGGER
Date: Thu, 20 Aug 2026 00:39:10 +0000
Message-ID: <E1wwqoH-00000001I0h-1Zvc@gemulon.postgresql.org> (raw)
Reject too many arguments in CREATE TRIGGER
The number of trigger arguments is stored as a smallint, but there was
no check that the number of arguments fits with the catalog data type.
This could result in an invalid negative value being stored once one
defined more than INT16_MAX arguments, with an overflowed value stored
in the catalogs.
Looking at other catalogs that store a number of arguments, we have
similar protections already in place (aggregates, functions, etc.).
Reported-by: Xingwang Xiang <v3rdant.xiang@gmail.com>
Author: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://postgr.es/m/19627-5b72a57e332e2b3f@postgresql.org
Backpatch-through: 14
Branch
------
REL_15_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/f0098e2fc90f8e0de8385d669bcc09d1e47ee1c8
Modified Files
--------------
src/backend/commands/trigger.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
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To: pgsql-committers@postgresql.org
Cc: michael@paquier.xyz, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Reject too many arguments in CREATE TRIGGER
In-Reply-To: <E1wwqoH-00000001I0h-1Zvc@gemulon.postgresql.org>
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