mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-10-01 01:35:54 -04:00
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
|
From 89fb17d17249382f8bd5c4c9b0912447ea7ff676 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Brian Delwiche <delwiche@google.com>
|
||
|
|
Date: Wed, 1 Mar 2023 00:22:59 +0000
|
||
|
|
Subject: [PATCH] Fix potential abort in btu_av_act.cc
|
||
|
|
|
||
|
|
Partner analysis shows that bta_av_rc_msg does not respect handling
|
||
|
|
established for a null browse packet, instead dispatching the null
|
||
|
|
pointer to bta_av_rc_free_browse_msg. Strictly speaking this does
|
||
|
|
not cause a UAF, as osi_free_and_reset will find the null and abort,
|
||
|
|
but it will lead to improper program termination.
|
||
|
|
|
||
|
|
Handle the case instead.
|
||
|
|
|
||
|
|
Bug: 269253349
|
||
|
|
Test: atest bluetooth_test_gd_unit
|
||
|
|
Tag: #security
|
||
|
|
Ignore-AOSP-First: Security
|
||
|
|
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d3ee136851de30261e56c62fbb488541dc564b94)
|
||
|
|
Merged-In: I14dc4910476c733b246bcf7ff292afe9b7c0cc3d
|
||
|
|
Change-Id: I14dc4910476c733b246bcf7ff292afe9b7c0cc3d
|
||
|
|
---
|
||
|
|
system/bta/av/bta_av_act.cc | 5 ++++-
|
||
|
|
1 file changed, 4 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/system/bta/av/bta_av_act.cc b/system/bta/av/bta_av_act.cc
|
||
|
|
index be199a4da3..357ca0ecf6 100644
|
||
|
|
--- a/system/bta/av/bta_av_act.cc
|
||
|
|
+++ b/system/bta/av/bta_av_act.cc
|
||
|
|
@@ -1001,7 +1001,10 @@ void bta_av_rc_msg(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
|
||
|
|
av.remote_cmd.rc_handle = p_data->rc_msg.handle;
|
||
|
|
(*p_cb->p_cback)(evt, &av);
|
||
|
|
/* If browsing message, then free the browse message buffer */
|
||
|
|
- bta_av_rc_free_browse_msg(p_cb, p_data);
|
||
|
|
+ if (p_data->rc_msg.opcode == AVRC_OP_BROWSE &&
|
||
|
|
+ p_data->rc_msg.msg.browse.p_browse_pkt != NULL) {
|
||
|
|
+ bta_av_rc_free_browse_msg(p_cb, p_data);
|
||
|
|
+ }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|