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https://github.com/Divested-Mobile/DivestOS-Build.git
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59 lines
2.2 KiB
Diff
59 lines
2.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Keith Mok <keithmok@google.com>
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Date: Mon, 22 Aug 2022 19:44:10 +0000
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Subject: [PATCH] Fix integer overflow when parsing avrc response
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Convert min_len from 16 bits to 32 bits to avoid
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length checking overflow.
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Also, use calloc instead of malloc for list allocation
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since caller need to clean up string memory in the list items
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Bug: 242459126
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Test: fuzz_avrc
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Tag: #security
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Ignore-AOSP-First: Security
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Merged-In: I7250509f2b320774926a8b24fd28828c5217d8a4
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Change-Id: I7250509f2b320774926a8b24fd28828c5217d8a4
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(cherry picked from commit a593687d6ad3978f48e2aa7be57d8239acdfa501)
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Merged-In: I7250509f2b320774926a8b24fd28828c5217d8a4
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---
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stack/avdt/avdt_scb_act.c | 2 +-
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stack/avrc/avrc_pars_ct.c | 4 ++--
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2 files changed, 3 insertions(+), 3 deletions(-)
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diff --git a/stack/avdt/avdt_scb_act.c b/stack/avdt/avdt_scb_act.c
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index d7cf791cc..f61abd626 100644
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--- a/stack/avdt/avdt_scb_act.c
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+++ b/stack/avdt/avdt_scb_act.c
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@@ -363,7 +363,7 @@ UINT8 * avdt_scb_hdl_report(tAVDT_SCB *p_scb, UINT8 *p, UINT16 len)
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UINT8 *p_start = p;
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UINT32 ssrc;
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UINT8 o_v, o_p, o_cc;
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- UINT16 min_len = 0;
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+ UINT32 min_len = 0;
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AVDT_REPORT_TYPE pt;
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tAVDT_REPORT_DATA report, *p_rpt;
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diff --git a/stack/avrc/avrc_pars_ct.c b/stack/avrc/avrc_pars_ct.c
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index fc94424ba..b43fd5f55 100644
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--- a/stack/avrc/avrc_pars_ct.c
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+++ b/stack/avrc/avrc_pars_ct.c
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@@ -148,7 +148,7 @@ static tAVRC_STS avrc_pars_vendor_rsp(tAVRC_MSG_VENDOR *p_msg, tAVRC_RESPONSE *p
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tAVRC_STS avrc_parse_notification_rsp(UINT8* p_stream, UINT16 len,
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tAVRC_REG_NOTIF_RSP* p_rsp) {
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- UINT16 min_len = 1;
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+ UINT32 min_len = 1;
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if (len < min_len) goto length_error;
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BE_STREAM_TO_UINT8(p_rsp->event_id, p_stream);
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@@ -241,7 +241,7 @@ static tAVRC_STS avrc_ctrl_pars_vendor_rsp(
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p++; /* skip the reserved/packe_type byte */
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UINT16 len;
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- UINT16 min_len = 0;
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+ UINT32 min_len = 0;
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BE_STREAM_TO_UINT16 (len, p);
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AVRC_TRACE_DEBUG("%s ctype:0x%x pdu:0x%x, len:%d vendor_len=0x%x", __func__,
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p_msg->hdr.ctype, p_result->pdu, len, p_msg->vendor_len);
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