https://bugs.gentoo.org/969287
https://gitlab.gnome.org/GNOME/gimp/-/issues/15287
https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/2569
https://gitlab.gnome.org/GNOME/gimp/-/commit/112a5e038f0646eae5ae314988ec074433d2b365

From 90716a8407adc9c4683b556422594d4590e83b69 Mon Sep 17 00:00:00 2001
From: Gabriele Barbero <barbero.gabriele03@gmail.com>
Date: Fri, 5 Dec 2025 19:13:01 +0100
Subject: [PATCH] ZDI-CAN-28158: use g_malloc0 instead of g_malloc

To avoid accessing uninitialized memory, replace calls to g_malloc with
g_malloc0 which initializes the allocated memory to zero.

Cherry-picked from 112a5e038f0646eae5ae314988ec074433d2b365
--- a/plug-ins/common/file-pnm.c
+++ b/plug-ins/common/file-pnm.c
@@ -571,7 +571,7 @@ load_image (GFile   *file,
     return -1;
 
   /* allocate the necessary structures */
-  pnminfo = g_new (PNMInfo, 1);
+  pnminfo = g_new0 (PNMInfo, 1);
 
   scan = NULL;
   /* set error handling */
-- 
2.52.0