mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-08-23 02:35:23 +00:00
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
![]() |
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
||
|
From: Hui Peng <phui@google.com>
|
||
|
Date: Wed, 28 Dec 2022 00:32:37 +0000
|
||
|
Subject: [PATCH] Fix an OOB Write bug in gatt_check_write_long_terminate
|
||
|
|
||
|
this is the backport of Ifffa2c7f679c4ef72dbdb6b1f3378ca506680084
|
||
|
|
||
|
Bug: 258652631
|
||
|
Test: manual
|
||
|
Tag: #security
|
||
|
Ignore-AOSP-First: security
|
||
|
Change-Id: Ic84122f07cbc198c676d366e39606621b7cb4e66
|
||
|
(cherry picked from commit 9b17660bfd6f0f41cb9400ce0236d76c83605e03)
|
||
|
Merged-In: Ic84122f07cbc198c676d366e39606621b7cb4e66
|
||
|
---
|
||
|
stack/gatt/gatt_cl.cc | 5 +++--
|
||
|
1 file changed, 3 insertions(+), 2 deletions(-)
|
||
|
|
||
|
diff --git a/stack/gatt/gatt_cl.cc b/stack/gatt/gatt_cl.cc
|
||
|
index 73a338b6d..98186daed 100644
|
||
|
--- a/stack/gatt/gatt_cl.cc
|
||
|
+++ b/stack/gatt/gatt_cl.cc
|
||
|
@@ -578,7 +578,8 @@ void gatt_process_prep_write_rsp(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
|
||
|
LOG(ERROR) << StringPrintf("value resp op_code = %s len = %d",
|
||
|
gatt_dbg_op_name(op_code), len);
|
||
|
|
||
|
- if (len < GATT_PREP_WRITE_RSP_MIN_LEN) {
|
||
|
+ if (len < GATT_PREP_WRITE_RSP_MIN_LEN ||
|
||
|
+ len > GATT_PREP_WRITE_RSP_MIN_LEN + sizeof(value.value)) {
|
||
|
LOG(ERROR) << "illegal prepare write response length, discard";
|
||
|
gatt_end_operation(p_clcb, GATT_INVALID_PDU, &value);
|
||
|
return;
|
||
|
@@ -587,7 +588,7 @@ void gatt_process_prep_write_rsp(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
|
||
|
STREAM_TO_UINT16(value.handle, p);
|
||
|
STREAM_TO_UINT16(value.offset, p);
|
||
|
|
||
|
- value.len = len - 4;
|
||
|
+ value.len = len - GATT_PREP_WRITE_RSP_MIN_LEN;
|
||
|
|
||
|
memcpy(value.value, p, value.len);
|
||
|
|