33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
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From 3f31bf9e243fb3de26e36d6be0bb0153f51c5b2a Mon Sep 17 00:00:00 2001
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From: Jean-Yves Avenard <jyavenard@mozilla.com>
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Date: Wed, 9 Dec 2015 09:54:58 +0100
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Subject: [PATCH] Bug 1206211 - P1. Ensure operation can't overflow.
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r=kentuckyfriedtakahe, a=sylvestre
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---
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.../frameworks/av/media/libstagefright/MPEG4Extractor.cpp | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/media/libstagefright/frameworks/av/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/frameworks/av/media/libstagefright/MPEG4Extractor.cpp
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index 22163fa..318152a 100644
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--- a/media/libstagefright/frameworks/av/media/libstagefright/MPEG4Extractor.cpp
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+++ b/media/libstagefright/frameworks/av/media/libstagefright/MPEG4Extractor.cpp
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@@ -508,10 +508,13 @@ status_t MPEG4Extractor::readMetaData() {
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CHECK_NE(err, (status_t)NO_INIT);
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// copy pssh data into file metadata
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- int psshsize = 0;
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+ uint64_t psshsize = 0;
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for (size_t i = 0; i < mPssh.size(); i++) {
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psshsize += 20 + mPssh[i].datalen;
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}
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+ if (psshsize > kMAX_ALLOCATION) {
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+ return ERROR_MALFORMED;
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+ }
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if (psshsize) {
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char *buf = (char*)malloc(psshsize);
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char *ptr = buf;
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--
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2.6.3
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