mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-06-26 06:32:28 +00:00
39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Hui Peng <phui@google.com>
|
|
Date: Wed, 29 Nov 2023 18:23:53 +0000
|
|
Subject: [PATCH] Fix an OOB write bug in attp_build_read_by_type_value_cmd
|
|
|
|
This is a backport of I2a95bbcce9a16ac84dd714eb4561428711a9872e
|
|
|
|
Bug: 297524203
|
|
Test: m com.android.btservices
|
|
Ignore-AOSP-First: security
|
|
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9cdac321797cbe8214bc3f6294ca9a71a4be07a7)
|
|
Merged-In: I8c5daedb1605307df697ea5d875153dfcf3f5181
|
|
Change-Id: I8c5daedb1605307df697ea5d875153dfcf3f5181
|
|
---
|
|
stack/gatt/att_protocol.cc | 10 ++++++++--
|
|
1 file changed, 8 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/stack/gatt/att_protocol.cc b/stack/gatt/att_protocol.cc
|
|
index ce809d04e..35be063ee 100644
|
|
--- a/stack/gatt/att_protocol.cc
|
|
+++ b/stack/gatt/att_protocol.cc
|
|
@@ -156,8 +156,14 @@ BT_HDR* attp_build_read_by_type_value_cmd(uint16_t payload_size,
|
|
tGATT_FIND_TYPE_VALUE* p_value_type) {
|
|
uint8_t* p;
|
|
uint16_t len = p_value_type->value_len;
|
|
- BT_HDR* p_buf =
|
|
- (BT_HDR*)osi_malloc(sizeof(BT_HDR) + payload_size + L2CAP_MIN_OFFSET);
|
|
+ BT_HDR* p_buf = nullptr;
|
|
+
|
|
+ if (payload_size < 5) {
|
|
+ return nullptr;
|
|
+ }
|
|
+
|
|
+ p_buf =
|
|
+ (BT_HDR*)osi_malloc(sizeof(BT_HDR) + payload_size + L2CAP_MIN_OFFSET);
|
|
|
|
p = (uint8_t*)(p_buf + 1) + L2CAP_MIN_OFFSET;
|
|
p_buf->offset = L2CAP_MIN_OFFSET;
|