From efe658674bd103d1c9bf50809d5767a3f6dd5a01 Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Wed, 5 Aug 2026 18:19:01 +0200
Subject: [PATCH] jpeg: When freeing memory, unset the size

Fixes potential invalid write if a specifically crafted JPEG file
would use markers to:

1. cause memory to be allocated
2. cause it to be freed due to an error
3. cause memory to be allocated again

I did not attempt to craft such a file.
---
 gdk-pixbuf/io-jpeg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gdk-pixbuf/io-jpeg.c b/gdk-pixbuf/io-jpeg.c
index a225998b1..8434fd00d 100644
--- a/gdk-pixbuf/io-jpeg.c
+++ b/gdk-pixbuf/io-jpeg.c
@@ -389,6 +389,8 @@ out:
         if (!ret) {
                 g_free (context->icc_profile);
                 context->icc_profile = NULL;
+                context->icc_profile_size = 0;
+                context->icc_profile_size_allocated = 0;
         }
 	return ret;
 }
-- 
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