diff --git a/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p1.patch b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p1.patch new file mode 100644 index 0000000000..50517f23b2 --- /dev/null +++ b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p1.patch @@ -0,0 +1,97 @@ +From db9c8fae398b0c457e660ce63dd5afec8993046a Mon Sep 17 00:00:00 2001 +From: Philip Withnall +Date: Tue, 28 Apr 2026 15:47:30 +0100 +Subject: [PATCH] gdbusauthmechanismsha1: Validate cookie context +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Without validation, the server could send a malicious context which +contains path traversal characters, allowing it to exfiltrate a SHA-1 +hashed copy of arbitrary data from the client's file system. + +To exploit this successfully would require the client to choose to +connect peer-to-peer to a malicious D-Bus server and to choose the SHA-1 +authentication mechanism in preference to all the other mechanisms. This +is vanishingly unlikely. + +Fixes: #3931 + +CVE: CVE-2026-58015 +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/db9c8fae398b0c457e660ce63dd5afec8993046a] + +Backport Changes: +- Added include because the target branch does not otherwise + expose uint8_t used by the upstream validation code during native builds. + +Signed-off-by: Philip Withnall +(cherry picked from commit db9c8fae398b0c457e660ce63dd5afec8993046a) +Signed-off-by: Deepak Rathore +--- + gio/gdbusauthmechanismsha1.c | 37 +++++++++++++++++++++++++++++++++++++ + 1 file changed, 37 insertions(+) + +diff --git a/gio/gdbusauthmechanismsha1.c b/gio/gdbusauthmechanismsha1.c +index c8aa08977c..7f348d862d 100644 +--- a/gio/gdbusauthmechanismsha1.c ++++ b/gio/gdbusauthmechanismsha1.c +@@ -22,6 +22,7 @@ + + #include "config.h" + ++#include + #include + #include + #include +@@ -1198,6 +1199,34 @@ mechanism_client_initiate (GDBusAuthMechanism *mechanism, + return initial_response; + } + ++/* Context names must be valid ASCII, nonzero length, and may not contain the ++ * characters slash ("/"), backslash ("\"), space (" "), newline ("\n"), ++ * carriage return ("\r"), tab ("\t"), or period ("."). ++ * ++ * See https://dbus.freedesktop.org/doc/dbus-specification.html#auth-mechanisms-sha */ ++static gboolean ++validate_cookie_context (const char *cookie_context) ++{ ++ size_t i = 0; ++ ++ g_return_val_if_fail (cookie_context != NULL, FALSE); ++ ++ for (i = 0; cookie_context[i] != '\0'; i++) ++ { ++ if ((uint8_t) cookie_context[i] >= 128 || ++ cookie_context[i] == '/' || ++ cookie_context[i] == '\\' || ++ cookie_context[i] == ' ' || ++ cookie_context[i] == '\n' || ++ cookie_context[i] == '\r' || ++ cookie_context[i] == '\t' || ++ cookie_context[i] == '.') ++ return FALSE; ++ } ++ ++ return (i > 0); ++} ++ + static void + mechanism_client_data_receive (GDBusAuthMechanism *mechanism, + const gchar *data, +@@ -1232,6 +1261,14 @@ mechanism_client_data_receive (GDBusAuthMechanism *mechanism, + } + + cookie_context = tokens[0]; ++ if (!validate_cookie_context (tokens[0])) ++ { ++ g_free (m->priv->reject_reason); ++ m->priv->reject_reason = g_strdup_printf ("Malformed cookie_context '%s'", tokens[0]); ++ m->priv->state = G_DBUS_AUTH_MECHANISM_STATE_REJECTED; ++ goto out; ++ } ++ + cookie_id = g_ascii_strtoll (tokens[1], &endp, 10); + if (*endp != '\0') + { +-- +GitLab diff --git a/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p2.patch b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p2.patch new file mode 100644 index 0000000000..dd814e192d --- /dev/null +++ b/meta/recipes-core/glib-2.0/glib-2.0/CVE-2026-58015_p2.patch @@ -0,0 +1,54 @@ +From c0531125344bb25fd66ffb7435ed6c285de09aeb Mon Sep 17 00:00:00 2001 +From: Philip Withnall +Date: Tue, 28 Apr 2026 15:49:54 +0100 +Subject: [PATCH] gdbusauthmechanismsha1: Improve validation of cookie ID +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The D-Bus specification says the cookie ID has to be non-negative, but +we weren't checking that (or checking that it was non-empty). + +CVE: CVE-2026-58015 +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/glib/-/commit/c0531125344bb25fd66ffb7435ed6c285de09aeb] + +Signed-off-by: Philip Withnall +(cherry picked from commit c0531125344bb25fd66ffb7435ed6c285de09aeb) +Signed-off-by: Deepak Rathore +--- + gio/gdbusauthmechanismsha1.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +diff --git a/gio/gdbusauthmechanismsha1.c b/gio/gdbusauthmechanismsha1.c +index 7f348d862d..3c17f81a19 100644 +--- a/gio/gdbusauthmechanismsha1.c ++++ b/gio/gdbusauthmechanismsha1.c +@@ -1234,7 +1234,7 @@ mechanism_client_data_receive (GDBusAuthMechanism *mechanism, + GDBusAuthMechanismSha1 *m = G_DBUS_AUTH_MECHANISM_SHA1 (mechanism); + gchar **tokens; + const gchar *cookie_context; +- guint cookie_id; ++ int64_t cookie_id; + const gchar *server_challenge; + gchar *client_challenge; + gchar *endp; +@@ -1269,7 +1269,7 @@ mechanism_client_data_receive (GDBusAuthMechanism *mechanism, + } + + cookie_id = g_ascii_strtoll (tokens[1], &endp, 10); +- if (*endp != '\0') ++ if (*endp != '\0' || endp == tokens[1] || cookie_id < 0 || cookie_id > UINT32_MAX) + { + g_free (m->priv->reject_reason); + m->priv->reject_reason = g_strdup_printf ("Malformed cookie_id '%s'", tokens[1]); +@@ -1279,7 +1279,7 @@ mechanism_client_data_receive (GDBusAuthMechanism *mechanism, + server_challenge = tokens[2]; + + error = NULL; +- cookie = keyring_lookup_entry (cookie_context, cookie_id, &error); ++ cookie = keyring_lookup_entry (cookie_context, (unsigned int) cookie_id, &error); + if (cookie == NULL) + { + g_free (m->priv->reject_reason); +-- +GitLab diff --git a/meta/recipes-core/glib-2.0/glib-2.0_2.78.6.bb b/meta/recipes-core/glib-2.0/glib-2.0_2.78.6.bb index e15aa1fe20..c2feff8988 100644 --- a/meta/recipes-core/glib-2.0/glib-2.0_2.78.6.bb +++ b/meta/recipes-core/glib-2.0/glib-2.0_2.78.6.bb @@ -54,6 +54,8 @@ SRC_URI = "${GNOME_MIRROR}/glib/${SHRT_VER}/glib-${PV}.tar.xz \ file://CVE-2026-58012.patch \ file://CVE-2026-58013.patch \ file://CVE-2026-58014.patch \ + file://CVE-2026-58015_p1.patch \ + file://CVE-2026-58015_p2.patch \ " SRC_URI:append:class-native = " file://relocate-modules.patch \ file://0001-meson.build-do-not-enable-pidfd-features-on-native-g.patch \