libsoup/SOURCES/CVE-2025-4948.patch

31 lines
1.1 KiB
Diff

From 592db079bc2dfea75708751ed0b7533ac9fd36df Mon Sep 17 00:00:00 2001
From: Milan Crha <mcrha@redhat.com>
Date: Thu, 15 May 2025 17:49:11 +0200
Subject: [PATCH] soup-multipart: Verify boundary limits for multipart body
It could happen that the boundary started at a place which resulted into
a negative number, which in an unsigned integer is a very large value.
Check the body size is not a negative value before setting it.
Closes https://gitlab.gnome.org/GNOME/libsoup/-/issues/449
---
libsoup/soup-multipart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libsoup/soup-multipart.c b/libsoup/soup-multipart.c
index dd939739..ce2fc109 100644
--- a/libsoup/soup-multipart.c
+++ b/libsoup/soup-multipart.c
@@ -214,7 +214,7 @@ soup_multipart_new_from_message (SoupMessageHeaders *headers,
*/
part_body = soup_buffer_new_subbuffer (flattened,
split - flattened->data,
- end - 2 - split);
+ end - 2 >= split ? end - 2 - split : 0);
g_ptr_array_add (multipart->bodies, part_body);
start = end;
--
2.49.0