diff options
| -rw-r--r-- | media/extractors/mp4/SampleTable.cpp | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/media/extractors/mp4/SampleTable.cpp b/media/extractors/mp4/SampleTable.cpp index 6558033eee..e7e8901bf1 100644 --- a/media/extractors/mp4/SampleTable.cpp +++ b/media/extractors/mp4/SampleTable.cpp @@ -391,20 +391,11 @@ status_t SampleTable::setTimeToSampleParams( } mTimeToSampleCount = U32_AT(&header[4]); - if (mTimeToSampleCount > UINT32_MAX / (2 * sizeof(uint32_t))) { - // Choose this bound because - // 1) 2 * sizeof(uint32_t) is the amount of memory needed for one - // time-to-sample entry in the time-to-sample table. - // 2) mTimeToSampleCount is the number of entries of the time-to-sample - // table. - // 3) We hope that the table size does not exceed UINT32_MAX. + if (mTimeToSampleCount > (data_size - 8) / (2 * sizeof(uint32_t))) { ALOGE("Time-to-sample table size too large."); return ERROR_OUT_OF_RANGE; } - // Note: At this point, we know that mTimeToSampleCount * 2 will not - // overflow because of the above condition. - uint64_t allocSize = (uint64_t)mTimeToSampleCount * 2 * sizeof(uint32_t); mTotalSize += allocSize; if (mTotalSize > kMaxTotalSize) { |