From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Sat, 17 Jan 2026 18:09:24 +0000 (+0200)
Subject: auth: db-oauth2 - Fix crash when oauth2:<field> variable doesn't exist
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b2f3b7764bdfb3b155dad939473f06a671b1b75;p=thirdparty%2Fdovecot%2Fcore.git

auth: db-oauth2 - Fix crash when oauth2:<field> variable doesn't exist

Broken in d0b4a58cb934731e4b64934895a319b16e0d66e8
---

diff --git a/src/auth/db-oauth2.c b/src/auth/db-oauth2.c
index 9ab64486e0..7b9634b931 100644
--- a/src/auth/db-oauth2.c
+++ b/src/auth/db-oauth2.c
@@ -372,8 +372,8 @@ static int db_oauth2_var_expand_func_oauth2(const char *field_name,
 {
 	struct db_oauth2_request *ctx = context;
 
-	if (ctx->fields != NULL) {
-		*value_r = auth_fields_find(ctx->fields, field_name);
+	if (ctx->fields != NULL &&
+	    (*value_r = auth_fields_find(ctx->fields, field_name)) != NULL) {
 		return 0;
 	} else {
 		*error_r = t_strdup_printf("Field '%s' not found", field_name);