Horton

Avoid null pointer dereference crash after OOM in Snowball stemmers.

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

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Commit: c0c364fa16094d2e6257908634b02ccaac0c8c8d
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2025-02-19T02:23:59Z
Releases: 16.9 
Avoid null pointer dereference crash after OOM in Snowball stemmers.

Absorb upstream bug fix (their commit
e322673a841d9abd69994ae8cd20e191090b6ef4), which prevents a null
pointer dereference crash if SN_create_env() gets a malloc failure
at just the wrong point.

Thanks to Maksim Korotkov for discovering the null-pointer
bug and submitting the fix to upstream snowball.

Reported-by: Maksim Korotkov <m.korotkov@postgrespro.ru>
Author: Maksim Korotkov <m.korotkov@postgrespro.ru>
Discussion: https://postgr.es/m/1d1a46-67ab1000-21-80c451@83151435
Backpatch-through: 13

Files

PathChange+/−
src/backend/snowball/libstemmer/api.c modified +1 −1

Discussion