From 384cc7c182fc00c6d5e2ab4b5e3671b2e3f93c84 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sun, 6 Apr 2025 12:41:11 +0200
Subject: [PATCH] [CVE-2025-32415] schemas: Fix heap buffer overflow in
 xmlSchemaIDCFillNodeTables

Don't use local variable which could contain a stale value.

Fixes #890.

CVE: CVE-2025-32415
Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/384cc7c182fc00c6d5e2ab4b5e3671b2e3f93c84]
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 xmlschemas.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xmlschemas.c b/xmlschemas.c
index 28b14bd4..428e3c82 100644
--- a/xmlschemas.c
+++ b/xmlschemas.c
@@ -23324,7 +23324,7 @@ xmlSchemaIDCFillNodeTables(xmlSchemaValidCtxtPtr vctxt,
 			j++;
 		    } while (j < nbDupls);
 		}
-		if (nbNodeTable) {
+		if (bind->nbNodes) {
 		    j = 0;
 		    do {
 			if (nbFields == 1) {
@@ -23375,7 +23375,7 @@ xmlSchemaIDCFillNodeTables(xmlSchemaValidCtxtPtr vctxt,
 
 next_node_table_entry:
 			j++;
-		    } while (j < nbNodeTable);
+		    } while (j < bind->nbNodes);
 		}
 		/*
 		* If everything is fine, then add the IDC target-node to