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36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Devin Moore <devinmoore@google.com>
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Date: Fri, 17 Feb 2023 17:12:46 +0000
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Subject: [PATCH] Check for malformed Sensor Flattenable
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Test: libsensorserviceaidl_fuzzer with testcase from bug
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Bug: 269014004
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Merged-In: I0e255c64243c38876fb657cbf942fc1613363216
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Change-Id: I0e255c64243c38876fb657cbf942fc1613363216
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(cherry picked from commit aeec1802f7befc8fbb18313ad3ac0969c3811870)
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Merged-In: I0e255c64243c38876fb657cbf942fc1613363216
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(cherry picked from commit on googleplex-android-review.googlesource.com host: f1aa5fb53437ec2fabc9be00099af836da5f07f2)
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Merged-In: I0e255c64243c38876fb657cbf942fc1613363216
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---
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libs/gui/Sensor.cpp | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/libs/gui/Sensor.cpp b/libs/gui/Sensor.cpp
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index 8edacc0c6d..93cd9fe2db 100644
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--- a/libs/gui/Sensor.cpp
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+++ b/libs/gui/Sensor.cpp
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@@ -546,7 +546,13 @@ bool Sensor::unflattenString8(void const*& buffer, size_t& size, String8& output
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return false;
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}
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outputString8.setTo(static_cast<char const*>(buffer), len);
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+
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+ if (size < FlattenableUtils::align<4>(len)) {
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+ ALOGE("Malformed Sensor String8 field. Should be in a 4-byte aligned buffer but is not.");
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+ return false;
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+ }
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FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
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+
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return true;
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}
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