From: Peter Marko <[email protected]> Pick relevant commit from [2] linked from [1].
[1] https://gitlab.gnome.org/GNOME/glib/-/issues/3851 [2] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4944 Signed-off-by: Peter Marko <[email protected]> --- .../glib-2.0/files/CVE-2026-0988.patch | 58 +++++++++++++++++++ meta/recipes-core/glib-2.0/glib.inc | 1 + 2 files changed, 59 insertions(+) create mode 100644 meta/recipes-core/glib-2.0/files/CVE-2026-0988.patch diff --git a/meta/recipes-core/glib-2.0/files/CVE-2026-0988.patch b/meta/recipes-core/glib-2.0/files/CVE-2026-0988.patch new file mode 100644 index 0000000000..daf86224d5 --- /dev/null +++ b/meta/recipes-core/glib-2.0/files/CVE-2026-0988.patch @@ -0,0 +1,58 @@ +From c5766cff61ffce0b8e787eae09908ac348338e5f Mon Sep 17 00:00:00 2001 +From: Philip Withnall <[email protected]> +Date: Thu, 18 Dec 2025 23:12:18 +0000 +Subject: [PATCH] gbufferedinputstream: Fix a potential integer overflow in + peek() + +If the caller provides `offset` and `count` arguments which overflow, +their sum will overflow and could lead to `memcpy()` reading out more +memory than expected. + +Spotted by Codean Labs. + +Signed-off-by: Philip Withnall <[email protected]> + +Fixes: #3851 + +CVE: CVE-2026-0988 +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/c5766cff61ffce0b8e787eae09908ac348338e5f] +Signed-off-by: Peter Marko <[email protected]> +--- + gio/gbufferedinputstream.c | 2 +- + gio/tests/buffered-input-stream.c | 10 ++++++++++ + 2 files changed, 11 insertions(+), 1 deletion(-) + +diff --git a/gio/gbufferedinputstream.c b/gio/gbufferedinputstream.c +index 9e6bacc62..56d656be0 100644 +--- a/gio/gbufferedinputstream.c ++++ b/gio/gbufferedinputstream.c +@@ -590,7 +590,7 @@ g_buffered_input_stream_peek (GBufferedInputStream *stream, + + available = g_buffered_input_stream_get_available (stream); + +- if (offset > available) ++ if (offset > available || offset > G_MAXSIZE - count) + return 0; + + end = MIN (offset + count, available); +diff --git a/gio/tests/buffered-input-stream.c b/gio/tests/buffered-input-stream.c +index a1af4eeff..2b2a0d9aa 100644 +--- a/gio/tests/buffered-input-stream.c ++++ b/gio/tests/buffered-input-stream.c +@@ -60,6 +60,16 @@ test_peek (void) + g_assert_cmpint (npeek, ==, 0); + g_free (buffer); + ++ buffer = g_new0 (char, 64); ++ npeek = g_buffered_input_stream_peek (G_BUFFERED_INPUT_STREAM (in), buffer, 8, 0); ++ g_assert_cmpint (npeek, ==, 0); ++ g_free (buffer); ++ ++ buffer = g_new0 (char, 64); ++ npeek = g_buffered_input_stream_peek (G_BUFFERED_INPUT_STREAM (in), buffer, 5, G_MAXSIZE); ++ g_assert_cmpint (npeek, ==, 0); ++ g_free (buffer); ++ + g_object_unref (in); + g_object_unref (base); + } diff --git a/meta/recipes-core/glib-2.0/glib.inc b/meta/recipes-core/glib-2.0/glib.inc index bd87d9c601..2e15cc7675 100644 --- a/meta/recipes-core/glib-2.0/glib.inc +++ b/meta/recipes-core/glib-2.0/glib.inc @@ -231,6 +231,7 @@ SRC_URI += "\ file://0001-gio-tests-resources.c-comment-out-a-build-host-only-.patch \ file://0010-Do-not-hardcode-python-path-into-various-tools.patch \ file://skip-timeout.patch \ + file://CVE-2026-0988.patch \ " SRC_URI:append:class-native = " file://relocate-modules.patch \ file://0001-meson.build-do-not-enable-pidfd-features-on-native-g.patch \
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