new file mode 100644
@@ -0,0 +1,70 @@
+From 591c546c536b42bef696d027f64aa22434f8c3f0 Mon Sep 17 00:00:00 2001
+From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
+Date: Tue, 8 Jun 2021 16:46:49 -0700
+Subject: [PATCH] shared/gatt-server: Fix heap overflow when appending prepare
+ writes
+
+The code shall check if the prepare writes would append more the
+allowed maximum attribute length.
+
+Fixes https://github.com/bluez/bluez/security/advisories/GHSA-479m-xcq5-9g2q
+
+CVE: CVE-2022-0204
+
+Upstream-Status: Backport [https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=591c546c536b42bef696d027f64aa22434f8c3f0]
+
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ src/shared/gatt-server.c | 22 ++++++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+diff --git a/src/shared/gatt-server.c b/src/shared/gatt-server.c
+index dc4e681c9..9beec44be 100644
+--- a/src/shared/gatt-server.c
++++ b/src/shared/gatt-server.c
+@@ -779,6 +779,20 @@ static uint8_t authorize_req(struct bt_gatt_server *server,
+ server->authorize_data);
+ }
+
++static uint8_t check_length(uint16_t length, uint16_t offset)
++{
++ if (length > BT_ATT_MAX_VALUE_LEN)
++ return BT_ATT_ERROR_INVALID_ATTRIBUTE_VALUE_LEN;
++
++ if (offset > BT_ATT_MAX_VALUE_LEN)
++ return BT_ATT_ERROR_INVALID_OFFSET;
++
++ if (length + offset > BT_ATT_MAX_VALUE_LEN)
++ return BT_ATT_ERROR_INVALID_ATTRIBUTE_VALUE_LEN;
++
++ return 0;
++}
++
+ static void write_cb(struct bt_att_chan *chan, uint8_t opcode, const void *pdu,
+ uint16_t length, void *user_data)
+ {
+@@ -809,6 +823,10 @@ static void write_cb(struct bt_att_chan *chan, uint8_t opcode, const void *pdu,
+ (opcode == BT_ATT_OP_WRITE_REQ) ? "Req" : "Cmd",
+ handle);
+
++ ecode = check_length(length, 0);
++ if (ecode)
++ goto error;
++
+ ecode = check_permissions(server, attr, BT_ATT_PERM_WRITE_MASK);
+ if (ecode)
+ goto error;
+@@ -1299,6 +1317,10 @@ static void prep_write_cb(struct bt_att_chan *chan, uint8_t opcode,
+ util_debug(server->debug_callback, server->debug_data,
+ "Prep Write Req - handle: 0x%04x", handle);
+
++ ecode = check_length(length, offset);
++ if (ecode)
++ goto error;
++
+ ecode = check_permissions(server, attr, BT_ATT_PERM_WRITE_MASK);
+ if (ecode)
+ goto error;
+--
+2.25.1
+
@@ -1,5 +1,8 @@
require bluez5.inc
+SRC_URI += "file://CVE-2022-0204.patch \
+ "
+
SRC_URI[md5sum] = "e6c51b2aefa7c56ff072819a78611fa5"
SRC_URI[sha256sum] = "59c4dba9fc8aae2a6a5f8f12f19bc1b0c2dc27355c7ca3123eed3fe6bd7d0b9d"