From c21645bf0e6ff5542600f94b3a0f6469f7c1c4e5 Mon Sep 17 00:00:00 2001
From: Gabriel Barrantes <gabriel.barrantes.dev@outlook.com>
Date: Sat, 7 Jun 2025 12:36:54 -0600
Subject: [PATCH] Fix memory leak in expand_mmac_params

Fixes: #3392758
CVE: CVE-2021-33450

Signed-off-by: Gabriel Barrantes <gabriel.barrantes.dev@outlook.com>
---
 asm/preproc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/asm/preproc.c b/asm/preproc.c
index 00c0294a..50f203fc 100644
--- a/asm/preproc.c
+++ b/asm/preproc.c
@@ -5621,6 +5621,7 @@ static Token *expand_mmac_params(Token * tline)
                 tail = &t->next;
 		set_text(t, text, tok_strlen(text));
                 t->type = type;
+                nasm_free(text);
             }
             changed = true;
         } else {