glib-2.0: patch CVE-2026-1484

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

[1] https://gitlab.gnome.org/GNOME/glib/-/issues/3870
[2] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4979

(From OE-Core rev: 67bc85229209e0405587c6747d9a98576d59e094)

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>

meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-1484-01.patch

@@ -0,0 +1,48 @@
+From 5ba0ed9ab2c28294713bdc56a8744ff0a446b59c Mon Sep 17 00:00:00 2001
+From: Marco Trevisan <mail@3v1n0.net>
+Date: Fri, 23 Jan 2026 18:48:30 +0100
+Subject: [PATCH] gbase64: Use gsize to prevent potential overflow
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Both g_base64_encode_step() and g_base64_encode_close() return gsize
+values, but these are summed to an int value.
+
+If the sum of these returned values is bigger than MAXINT, we overflow
+while doing the null byte write.
+
+Spotted by treeplus.
+Thanks to the Sovereign Tech Resilience programme from the Sovereign
+Tech Agency.
+
+ID: #YWH-PGM9867-168
+Closes: #3870
+
+
+(cherry picked from commit 6845f7776982849a2be1d8c9b0495e389092bff2)
+
+Co-authored-by: Marco Trevisan (Treviño) <mail@3v1n0.net>
+
+CVE: CVE-2026-1484
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/5ba0ed9ab2c28294713bdc56a8744ff0a446b59c]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ glib/gbase64.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/glib/gbase64.c b/glib/gbase64.c
+index 2ea4a4ef4..214b48911 100644
+--- a/glib/gbase64.c
++++ b/glib/gbase64.c
+@@ -264,8 +264,9 @@ g_base64_encode (const guchar *data,
+                  gsize         len)
+ {
+   gchar *out;
+-  gint state = 0, outlen;
++  gint state = 0;
+   gint save = 0;
++  gsize outlen;
+ 
+   g_return_val_if_fail (data != NULL || len == 0, NULL);
+ 

meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-1484-02.patch

@@ -0,0 +1,45 @@
+From 25429bd0b22222d6986d000d62b44eebf490837d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
+Date: Wed, 21 Jan 2026 20:09:44 +0100
+Subject: [PATCH] gbase64: Ensure that the out value is within allocated size
+
+We do not want to deference or write to it
+
+Related to: #3870
+
+CVE: CVE-2026-1484
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/25429bd0b22222d6986d000d62b44eebf490837d]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ glib/gbase64.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/glib/gbase64.c b/glib/gbase64.c
+index 214b48911..0141b3b07 100644
+--- a/glib/gbase64.c
++++ b/glib/gbase64.c
+@@ -267,6 +267,7 @@ g_base64_encode (const guchar *data,
+   gint state = 0;
+   gint save = 0;
+   gsize outlen;
++  gsize allocsize;
+ 
+   g_return_val_if_fail (data != NULL || len == 0, NULL);
+ 
+@@ -274,10 +275,15 @@ g_base64_encode (const guchar *data,
+      +1 is needed for trailing \0, also check for unlikely integer overflow */
+   g_return_val_if_fail (len < ((G_MAXSIZE - 1) / 4 - 1) * 3, NULL);
+ 
+-  out = g_malloc ((len / 3 + 1) * 4 + 1);
++  allocsize = (len / 3 + 1) * 4 + 1;
++  out = g_malloc (allocsize);
+ 
+   outlen = g_base64_encode_step (data, len, FALSE, out, &state, &save);
++  g_assert (outlen <= allocsize);
++
+   outlen += g_base64_encode_close (FALSE, out + outlen, &state, &save);
++  g_assert (outlen <= allocsize);
++
+   out[outlen] = '\0';
+ 
+   return (gchar *) out;

meta/recipes-core/glib-2.0/glib-2.0_2.78.6.bb

@@ -40,6 +40,8 @@ SRC_URI = "${GNOME_MIRROR}/glib/${SHRT_VER}/glib-${PV}.tar.xz \
            file://CVE-2025-14087-03.patch \
            file://CVE-2025-14512.patch \
            file://CVE-2026-0988.patch \
+           file://CVE-2026-1484-01.patch \
+           file://CVE-2026-1484-02.patch \
            "
 SRC_URI:append:class-native = " file://relocate-modules.patch \
                                 file://0001-meson.build-do-not-enable-pidfd-features-on-native-g.patch \