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help / color / mirror / Atom feedFrom: Noah Misch <[email protected]>
To: [email protected]
Subject: pgsql: Fix overflows with ts_headline()
Date: Mon, 11 May 2026 12:19:36 +0000
Message-ID: <[email protected]> (raw)
Fix overflows with ts_headline()
The options "StartSel", "StopSel" and "FragmentDelimiter" given by a
caller of the SQL function ts_headline() have their lengths stored as
int16. When providing values larger than PG_INT16_MAX, it was possible
to overflow the length values stored, leading to incorrect behaviors in
generateHeadline(), in most cases translating to a crash.
Attempting to use values for these options larger than PG_INT16_MAX is
now blocked. Some test cases are added to cover our tracks.
Reported-by: Xint Code
Author: Michael Paquier <[email protected]>
Backpatch-through: 14
Security: CVE-2026-6473
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/d388e1d7f0468db8d046f9101f972d1fa988b19a
Author: Michael Paquier <[email protected]>
Modified Files
--------------
src/backend/tsearch/wparser_def.c | 24 +++++++++++++++++++++---
src/test/regress/expected/tsearch.out | 10 ++++++++++
src/test/regress/sql/tsearch.sql | 8 ++++++++
3 files changed, 39 insertions(+), 3 deletions(-)
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