Horton

Re: BUG #17935: Incorrect memory access in fuzzystrmatch/difference()

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: exclusion@gmail.com
Cc: pgsql-bugs@lists.postgresql.org
Date: 2023-05-16T14:23:03Z
Lists: pgsql-bugs 
PG Bug reporting form <noreply@postgresql.org> writes:
> In this case, _soundex() exits prematurely and sets only first and last
> char
> of it's parameter outstr, but difference() loops through SOUNDEX_LEN
> chars,
> and thus uses initialized data.

Yup, that's pretty sloppy, will fix.

			regards, tom lane

Commits

  1. Ensure Soundex difference() function handles empty input sanely.