glib-2.0: patch CVE-2025-14512

Pick patch from [1] linked from [2].

[1] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4935
[2] https://gitlab.gnome.org/GNOME/glib/-/issues/3845

(From OE-Core rev: 2fb84f36c77e0d049a71dcfa597a67d297cbfd0a)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 71 insertions, 0 deletions

diff --git a/meta/recipes-core/glib-2.0/glib-2.0/CVE-2025-14512.patch b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2025-14512.patch
new file mode 100644
index 0000000000..fd3ba765b1
--- /dev/null
+++ b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2025-14512.patch
@@ -0,0 +1,70 @@
+From 1909d8ea9297287f1ff6862968608dcf06e60523 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@gnome.org>
+Date: Thu, 4 Dec 2025 16:37:19 +0000
+Subject: [PATCH] gfileattribute: Fix integer overflow calculating escaping for
+ byte strings
+
+The number of invalid characters in the byte string (characters which
+would have to be percent-encoded) was only stored in an `int`, which
+gave the possibility of a long string largely full of invalid
+characters overflowing this and allowing an attacker-controlled buffer
+size to be allocated.
+
+This could be triggered by an attacker controlled file attribute (of
+type `G_FILE_ATTRIBUTE_TYPE_BYTE_STRING`), such as
+`G_FILE_ATTRIBUTE_THUMBNAIL_PATH` or `G_FILE_ATTRIBUTE_STANDARD_NAME`,
+being read by user code.
+
+Spotted by Codean Labs.
+
+Signed-off-by: Philip Withnall <pwithnall@gnome.org>
+
+Fixes: #3845
+
+CVE: CVE-2025-14512
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/1909d8ea9297287f1ff6862968608dcf06e60523]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ gio/gfileattribute.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/gio/gfileattribute.c b/gio/gfileattribute.c
+index c6fde60fa..d3083e5bd 100644
+--- a/gio/gfileattribute.c
++++ b/gio/gfileattribute.c
+@@ -20,6 +20,7 @@
+ 
+ #include "config.h"
+ 
++#include <stdint.h>
+ #include <string.h>
+ 
+ #include "gfileattribute.h"
+@@ -271,11 +272,12 @@ valid_char (char c)
+   return c >= 32 && c <= 126 && c != '\\';
+ }
+ 
++/* Returns NULL on error */
+ static char *
+ escape_byte_string (const char *str)
+ {
+   size_t i, len;
+-  int num_invalid;
++  size_t num_invalid;
+   char *escaped_val, *p;
+   unsigned char c;
+   const char hex_digits[] = "0123456789abcdef";
+@@ -293,7 +295,12 @@ escape_byte_string (const char *str)
+     return g_strdup (str);
+   else
+     {
+-      escaped_val = g_malloc (len + num_invalid*3 + 1);
++      /* Check for overflow. We want to check the inequality:
++       * !(len + num_invalid * 3 + 1 > SIZE_MAX) */
++      if (num_invalid >= (SIZE_MAX - len) / 3)
++        return NULL;
++
++      escaped_val = g_malloc (len + num_invalid * 3 + 1);
+ 
+       p = escaped_val;
+       for (i = 0; i < len; i++)
diff --git a/meta/recipes-core/glib-2.0/glib-2.0_2.72.3.bb b/meta/recipes-core/glib-2.0/glib-2.0_2.72.3.bb
index c5704a27bc..50701be3d0 100644
--- a/meta/recipes-core/glib-2.0/glib-2.0_2.72.3.bb
+++ b/meta/recipes-core/glib-2.0/glib-2.0_2.72.3.bb
@@ -69,6 +69,7 @@ SRC_URI = "${GNOME_MIRROR}/glib/${SHRT_VER}/glib-${PV}.tar.xz \
            file://CVE-2025-14087-01.patch \
            file://CVE-2025-14087-02.patch \
            file://CVE-2025-14087-03.patch \
+           file://CVE-2025-14512.patch \
            "
 SRC_URI:append:class-native = " file://relocate-modules.patch"